diff --git a/packages/medusa/src/api/routes/store/carts/add-shipping-method.js b/packages/medusa/src/api/routes/store/carts/add-shipping-method.js
index 3476e6f628..db5702a01b 100644
--- a/packages/medusa/src/api/routes/store/carts/add-shipping-method.js
+++ b/packages/medusa/src/api/routes/store/carts/add-shipping-method.js
@@ -22,7 +22,7 @@ export default async (req, res) => {
     await cartService.addShippingMethod(id, value.option_id, value.data)
 
     let cart = await cartService.retrieve(id)
-    cart = await cartService.decorate(cart)
+    cart = await cartService.decorate(cart, [], ["region"])
 
     res.status(200).json({ cart })
   } catch (err) {
diff --git a/packages/medusa/src/api/routes/store/carts/create-line-item.js b/packages/medusa/src/api/routes/store/carts/create-line-item.js
index 1aaf5aeb82..2d28d5212e 100644
--- a/packages/medusa/src/api/routes/store/carts/create-line-item.js
+++ b/packages/medusa/src/api/routes/store/carts/create-line-item.js
@@ -26,7 +26,7 @@ export default async (req, res) => {
     await cartService.addLineItem(cart._id, lineItem)
 
     cart = await cartService.retrieve(cart._id)
-    cart = await cartService.decorate(cart)
+    cart = await cartService.decorate(cart, [], ["region"])
 
     res.status(200).json({ cart })
   } catch (err) {
diff --git a/packages/medusa/src/api/routes/store/carts/create-payment-sessions.js b/packages/medusa/src/api/routes/store/carts/create-payment-sessions.js
index 58df527807..72c594cf84 100644
--- a/packages/medusa/src/api/routes/store/carts/create-payment-sessions.js
+++ b/packages/medusa/src/api/routes/store/carts/create-payment-sessions.js
@@ -9,7 +9,7 @@ export default async (req, res) => {
 
     // return the updated cart
     let cart = await cartService.retrieve(id)
-    cart = await cartService.decorate(cart)
+    cart = await cartService.decorate(cart, [], ["region"])
 
     res.status(200).json({ cart })
   } catch (err) {
diff --git a/packages/medusa/src/api/routes/store/carts/delete-line-item.js b/packages/medusa/src/api/routes/store/carts/delete-line-item.js
new file mode 100644
index 0000000000..80cf633895
--- /dev/null
+++ b/packages/medusa/src/api/routes/store/carts/delete-line-item.js
@@ -0,0 +1,16 @@
+import { Validator, MedusaError } from "medusa-core-utils"
+
+export default async (req, res) => {
+  const { id, line_id } = req.params
+
+  try {
+    const cartService = req.scope.resolve("cartService")
+
+    let cart = await cartService.removeLineItem(id, line_id)
+    cart = await cartService.decorate(cart, [], ["region"])
+
+    res.status(200).json({ cart })
+  } catch (err) {
+    throw err
+  }
+}
diff --git a/packages/medusa/src/api/routes/store/carts/index.js b/packages/medusa/src/api/routes/store/carts/index.js
index f072db9dd4..b76417379b 100644
--- a/packages/medusa/src/api/routes/store/carts/index.js
+++ b/packages/medusa/src/api/routes/store/carts/index.js
@@ -20,6 +20,10 @@ export default app => {
     "/:id/line-items/:line_id",
     middlewares.wrap(require("./update-line-item").default)
   )
+  route.delete(
+    "/:id/line-items/:line_id",
+    middlewares.wrap(require("./delete-line-item").default)
+  )
 
   // Payment sessions
   route.post(
diff --git a/packages/medusa/src/api/routes/store/carts/update-cart.js b/packages/medusa/src/api/routes/store/carts/update-cart.js
index 64cc1158c5..dc06df901a 100644
--- a/packages/medusa/src/api/routes/store/carts/update-cart.js
+++ b/packages/medusa/src/api/routes/store/carts/update-cart.js
@@ -57,7 +57,7 @@ export default async (req, res) => {
     }
 
     let newCart = await cartService.retrieve(id)
-    const data = await cartService.decorate(newCart)
+    const data = await cartService.decorate(newCart, [], ["region"])
     res.json({ cart: data })
   } catch (err) {
     throw err
diff --git a/packages/medusa/src/api/routes/store/carts/update-line-item.js b/packages/medusa/src/api/routes/store/carts/update-line-item.js
index 7602afb6cc..c30578b3bb 100644
--- a/packages/medusa/src/api/routes/store/carts/update-line-item.js
+++ b/packages/medusa/src/api/routes/store/carts/update-line-item.js
@@ -24,10 +24,8 @@ export default async (req, res) => {
       cart.region_id
     )
 
-    await cartService.updateLineItem(cart._id, line_id, lineItem)
-
-    cart = await cartService.retrieve(cart._id)
-    cart = await cartService.decorate(cart)
+    cart = await cartService.updateLineItem(cart._id, line_id, lineItem)
+    cart = await cartService.decorate(cart, [], ["region"])
 
     res.status(200).json({ cart })
   } catch (err) {
diff --git a/packages/medusa/src/api/routes/store/carts/update-payment-method.js b/packages/medusa/src/api/routes/store/carts/update-payment-method.js
index fb4bf52dba..e5a6c13ab5 100644
--- a/packages/medusa/src/api/routes/store/carts/update-payment-method.js
+++ b/packages/medusa/src/api/routes/store/carts/update-payment-method.js
@@ -22,7 +22,7 @@ export default async (req, res) => {
     await cartService.setPaymentMethod(id, session)
 
     let cart = await cartService.retrieve(id)
-    cart = await cartService.decorate(cart)
+    cart = await cartService.decorate(cart, [], ["region"])
 
     res.status(200).json({ cart })
   } catch (err) {
diff --git a/packages/medusa/src/api/routes/store/shipping-options/index.js b/packages/medusa/src/api/routes/store/shipping-options/index.js
index ea3cbc1cad..e710b97798 100644
--- a/packages/medusa/src/api/routes/store/shipping-options/index.js
+++ b/packages/medusa/src/api/routes/store/shipping-options/index.js
@@ -6,7 +6,10 @@ const route = Router()
 export default app => {
   app.use("/shipping-options", route)
 
-  route.get("/", middlewares.wrap(require("./list-shipping-options").default))
+  route.get(
+    "/:cart_id",
+    middlewares.wrap(require("./list-shipping-options").default)
+  )
 
   return app
 }
diff --git a/packages/medusa/src/api/routes/store/shipping-options/list-shipping-options.js b/packages/medusa/src/api/routes/store/shipping-options/list-shipping-options.js
index e47a2f420a..193fdf66de 100644
--- a/packages/medusa/src/api/routes/store/shipping-options/list-shipping-options.js
+++ b/packages/medusa/src/api/routes/store/shipping-options/list-shipping-options.js
@@ -2,10 +2,10 @@ import { Validator, MedusaError } from "medusa-core-utils"
 
 export default async (req, res) => {
   const schema = Validator.object().keys({
-    cart_id: Validator.string(),
+    cart_id: Validator.string().required(),
   })
 
-  const { value, error } = schema.validate(req.body)
+  const { value, error } = schema.validate(req.params)
   if (error) {
     throw new MedusaError(MedusaError.Types.INVALID_DATA, error.details)
   }
diff --git a/packages/medusa/src/models/order.js b/packages/medusa/src/models/order.js
index 6ff8ec7cd3..3389a01ea3 100644
--- a/packages/medusa/src/models/order.js
+++ b/packages/medusa/src/models/order.js
@@ -5,7 +5,7 @@ import LineItemSchema from "./schemas/line-item"
 import PaymentMethodSchema from "./schemas/payment-method"
 import ShippingMethodSchema from "./schemas/shipping-method"
 import AddressSchema from "./schemas/address"
-import DiscountModel from "./discount"
+import DiscountSchema from "./schemas/discount"
 
 class OrderModel extends BaseModel {
   static modelName = "Order"
@@ -23,8 +23,8 @@ class OrderModel extends BaseModel {
     shipping_address: { type: AddressSchema, required: true },
     items: { type: [LineItemSchema], required: true },
     region_id: { type: String, required: true },
-    discounts: { type: [DiscountModel.schema], default: [] },
-    customer_id: { type: String, required: true },
+    discounts: { type: [DiscountSchema], default: [] },
+    customer_id: { type: String },
     payment_method: { type: PaymentMethodSchema, required: true },
     shipping_methods: { type: [ShippingMethodSchema], required: true },
     metadata: { type: mongoose.Schema.Types.Mixed, default: {} },
diff --git a/packages/medusa/src/services/cart.js b/packages/medusa/src/services/cart.js
index 8eadf54049..5ecb368a34 100644
--- a/packages/medusa/src/services/cart.js
+++ b/packages/medusa/src/services/cart.js
@@ -226,6 +226,10 @@ class CartService extends BaseService {
    */
   async decorate(cart, fields, expandFields = []) {
     const c = cart.toObject()
+    c.shipping_total = await this.totalsService_.getShippingTotal(cart)
+    c.discount_total = await this.totalsService_.getDiscountTotal(cart)
+    c.tax_total = await this.totalsService_.getTaxTotal(cart)
+    c.subtotal = await this.totalsService_.getSubtotal(cart)
     c.total = await this.totalsService_.getTotal(cart)
     if (expandFields.includes("region")) {
       c.region = await this.regionService_.retrieve(cart.region_id)
@@ -241,10 +245,10 @@ class CartService extends BaseService {
    */
   async removeLineItem(cartId, lineItemId) {
     const cart = await this.retrieve(cartId)
-    const itemToRemove = cart.items.find(line => line._id === lineItemId)
+    const itemToRemove = cart.items.find(line => line._id.equals(lineItemId))
 
     if (!itemToRemove) {
-      return Promise.resolve()
+      return Promise.resolve(cart)
     }
 
     // If cart has more than one of those line items, we update the quantity
@@ -739,7 +743,7 @@ class CartService extends BaseService {
     )
 
     const status = await provider.getStatus(paymentMethod.data)
-    if (status !== "authorized") {
+    if (!(status === "authorized" || status === "succeeded")) {
       throw new MedusaError(
         MedusaError.Types.NOT_ALLOWED,
         `The payment method was not authorized`
diff --git a/packages/medusa/src/services/line-item.js b/packages/medusa/src/services/line-item.js
index 92c5e5ec0e..22ea8c321e 100644
--- a/packages/medusa/src/services/line-item.js
+++ b/packages/medusa/src/services/line-item.js
@@ -37,8 +37,12 @@ class LineItemService extends BaseService {
 
     const lineItemSchema = Validator.object({
       title: Validator.string().required(),
-      description: Validator.string(),
-      thumbnail: Validator.string(),
+      description: Validator.string()
+        .allow("")
+        .optional(),
+      thumbnail: Validator.string()
+        .allow("")
+        .optional(),
       content: Validator.alternatives()
         .try(content, Validator.array().items(content))
         .required(),
@@ -46,7 +50,7 @@ class LineItemService extends BaseService {
         .integer()
         .min(1)
         .required(),
-      metadata: Validator.object(),
+      metadata: Validator.object().default({}),
     })
 
     const { value, error } = lineItemSchema.validate(rawLineItem)
diff --git a/packages/medusa/src/services/order.js b/packages/medusa/src/services/order.js
index f58da00647..c9a1c62876 100644
--- a/packages/medusa/src/services/order.js
+++ b/packages/medusa/src/services/order.js
@@ -188,8 +188,20 @@ class OrderService extends BaseService {
    * @return {Promise} resolves to the creation result.
    */
   async createFromCart(cart) {
+    const o = {
+      payment_method: cart.payment_method,
+      shipping_methods: cart.shipping_methods,
+      items: cart.items,
+      shipping_address: cart.shipping_address,
+      billing_address: cart.shipping_address,
+      region_id: cart.region_id,
+      email: cart.email,
+      customer_id: cart.customer_id,
+      cart_id: cart._id,
+    }
+
     return this.orderModel_
-      .create({ ...cart, metadata: { cart_id: cart._id } })
+      .create(o)
       .then(result => {
         // Notify subscribers
         this.eventBus_.emit(OrderService.Events.PLACED, result)
diff --git a/packages/medusa/src/services/shipping-option.js b/packages/medusa/src/services/shipping-option.js
index db65235491..baea75d432 100644
--- a/packages/medusa/src/services/shipping-option.js
+++ b/packages/medusa/src/services/shipping-option.js
@@ -136,7 +136,8 @@ class ShippingOptionService extends BaseService {
    * @return {ShippingOption} the validated shipping option
    */
   async validateCartOption(optionId, cart) {
-    let option = await this.retrieve(optionId)
+    const optionDoc = await this.retrieve(optionId)
+    let option = optionDoc.toObject()
 
     if (cart.region_id !== option.region_id) {
       throw new MedusaError(
@@ -150,7 +151,7 @@ class ShippingOptionService extends BaseService {
       if (requirement.type === "max_subtotal") {
         return requirement.value > subtotal
       } else if (requirement.type === "min_subtotal") {
-        return requirement.value < subtotal
+        return requirement.value <= subtotal
       }
 
       return true // default to true