docs: document how prices are stored in Medusa (#13362)

www/apps/book/app/learn/introduction/from-v1-to-v2/page.mdx

@@ -1893,6 +1893,14 @@ In Medusa v2, the price selection process is now implemented in the [Pricing Mod
 
 If your use case is complex and these rules are not enough, you can create a new [module](../../fundamentals/modules/page.mdx) with the necessary logic, then use that module in your custom workflows.
 
+## Prices are Stored in Base Units
+
+In Medusa v1, prices were stored in the smallest currency unit. For example, a price of $10.00 was stored as `1000` (cents).
+
+In Medusa v2, prices are stored in the base unit. For example, a price of $10.00 is stored as `10` (dollars).
+
+Learn more in the [Pricing Concepts](!resources!/commerce-modules/pricing/concepts) guide.
+
 ### Gift Card Features
 
 Medusa v1 has gift card features out-of-the-box.

www/apps/book/generated/edit-dates.mjs

@@ -125,7 +125,7 @@ export const generatedEditDates = {
   "app/learn/introduction/build-with-llms-ai/page.mdx": "2025-07-22T16:19:11.668Z",
   "app/learn/installation/docker/page.mdx": "2025-07-23T15:34:18.530Z",
   "app/learn/fundamentals/generated-types/page.mdx": "2025-07-25T13:17:35.319Z",
-  "app/learn/introduction/from-v1-to-v2/page.mdx": "2025-07-30T08:13:48.592Z",
+  "app/learn/introduction/from-v1-to-v2/page.mdx": "2025-09-01T06:34:41.179Z",
   "app/learn/debugging-and-testing/debug-workflows/page.mdx": "2025-07-30T13:45:14.117Z",
   "app/learn/fundamentals/data-models/json-properties/page.mdx": "2025-07-31T14:25:01.268Z",
   "app/learn/debugging-and-testing/logging/custom-logger/page.mdx": "2025-08-28T15:37:07.328Z",

www/apps/book/public/llms-full.txt

@@ -22794,6 +22794,14 @@ In Medusa v2, the price selection process is now implemented in the [Pricing Mod
 
 If your use case is complex and these rules are not enough, you can create a new [module](https://docs.medusajs.com/learn/fundamentals/modules/index.html.md) with the necessary logic, then use that module in your custom workflows.
 
+## Prices are Stored in Base Units
+
+In Medusa v1, prices were stored in the smallest currency unit. For example, a price of $10.00 was stored as `1000` (cents).
+
+In Medusa v2, prices are stored in the base unit. For example, a price of $10.00 is stored as `10` (dollars).
+
+Learn more in the [Pricing Concepts](https://docs.medusajs.com/resources/commerce-modules/pricing/concepts/index.html.md) guide.
+
 ### Gift Card Features
 
 Medusa v1 has gift card features out-of-the-box.
@@ -32182,11 +32190,21 @@ View the full flow of the webhook event processing in the [processPaymentWorkflo
 
 In this document, you’ll learn about the main concepts in the Pricing Module.
 
+## Price Data Model
+
+The [Price](https://docs.medusajs.com/references/pricing/models/Price/index.html.md) data model represents a specific price for a resource. For example, the price of a product variant in the USD currency.
+
+The `Price` data model has an `amount` property that represents the monetary value of the price. It's stored as an integer in base units. For example, `$20.00` is stored as `20`.
+
+The `Price` data model belongs to other data models like `PriceSet` and `PriceList` to provide a variety of pricing features, as explained below.
+
+***
+
 ## Price Set
 
-A [PriceSet](https://docs.medusajs.com/references/pricing/models/PriceSet/index.html.md) represents a collection of prices that are linked to a resource (for example, a product or a shipping option).
+A [PriceSet](https://docs.medusajs.com/references/pricing/models/PriceSet/index.html.md) represents a collection of prices that are linked to a resource (for example, a product variant or a shipping option).
 
-Each of these prices are represented by the [Price data module](https://docs.medusajs.com/references/pricing/models/Price/index.html.md).
+Each of these prices is represented by the [Price data model](https://docs.medusajs.com/references/pricing/models/Price/index.html.md).
 
 ![A diagram showcasing the relation between the price set and price](https://res.cloudinary.com/dza7lstvk/image/upload/v1709648650/Medusa%20Resources/price-set-money-amount_xeees0.jpg)
 
@@ -32622,27 +32640,27 @@ const priceSet = await pricingModuleService.createPriceSets({
   prices: [
     // default price
     {
-      amount: 500,
+      amount: 5,
       currency_code: "EUR",
       rules: {},
     },
     // prices with rules
     {
-      amount: 400,
+      amount: 4,
       currency_code: "EUR",
       rules: {
         region_id: "reg_123",
       },
     },
     {
-      amount: 450,
+      amount: 4.5,
       currency_code: "EUR",
       rules: {
         city: "krakow",
       },
     },
     {
-      amount: 500,
+      amount: 5,
       currency_code: "EUR",
       rules: {
         city: "warsaw",
@@ -32650,7 +32668,7 @@ const priceSet = await pricingModuleService.createPriceSets({
       },
     },
     {
-      amount: 200,
+      amount: 2,
       currency_code: "EUR",
       min_quantity: 100,
     },
@@ -32707,7 +32725,7 @@ const price = await pricingModuleService.calculatePrices(
         items: [
           {
             id: "item_1",
-            quantity: 200,
+            quantity: 2,
             // assuming the price set belongs to this variant
             variant_id: "variant_1",
             // ...
@@ -32738,12 +32756,12 @@ const priceList = pricingModuleService.createPriceLists([{
   type: "sale",
   prices: [
     {
-      amount: 400,
+      amount: 4,
       currency_code: "EUR",
       price_set_id: priceSet.id,
     },
     {
-      amount: 450,
+      amount: 4.5,
       currency_code: "EUR",
       price_set_id: priceSet.id,
     },