diff --git a/apps/api/src/modules/listings/repositories/listing-repository.js b/apps/api/src/modules/listings/repositories/listing-repository.js
index d317348..2ffcb48 100644
--- a/apps/api/src/modules/listings/repositories/listing-repository.js
+++ b/apps/api/src/modules/listings/repositories/listing-repository.js
@@ -161,6 +161,16 @@ export function createListingRepository(db) {
       }
 
       const offset = (page - 1) * limit;
+      const marketValue = sql`COALESCE(
+        (SELECT ${marketValueOverrides.valueMinor}
+          FROM ${marketValueOverrides}
+          WHERE ${marketValueOverrides.inventoryItemId} = ${inventoryItems.id}
+          ORDER BY ${marketValueOverrides.createdAt} DESC LIMIT 1),
+        (SELECT ${marketValuations.valueMinor}
+          FROM ${marketValuations}
+          WHERE ${marketValuations.inventoryItemId} = ${inventoryItems.id}
+          ORDER BY ${marketValuations.calculatedAt} DESC LIMIT 1)
+      )`;
       const sortOrder =
         sort === "updated"
           ? desc(listings.updatedAt)
@@ -168,6 +178,10 @@ export function createListingRepository(db) {
             ? products.name
             : sort === "name_desc"
               ? desc(products.name)
+              : sort === "market_low"
+                ? sql`${marketValue} ASC NULLS LAST`
+                : sort === "market_high"
+                  ? sql`${marketValue} DESC NULLS LAST`
               : sort === "price_low"
           ? listings.askingPriceMinor
           : sort === "price_high"
diff --git a/apps/api/src/modules/search/domain/search-query.js b/apps/api/src/modules/search/domain/search-query.js
index 4c679e4..1075610 100644
--- a/apps/api/src/modules/search/domain/search-query.js
+++ b/apps/api/src/modules/search/domain/search-query.js
@@ -67,8 +67,8 @@ export function createSearchQuery({
     throw new Error("minPriceMinor must be <= maxPriceMinor");
   }
 
-  if (!["recent", "updated", "name_asc", "name_desc", "price_low", "price_high"].includes(sort)) {
-    throw new Error("sort must be recent, updated, name_asc, name_desc, price_low, or price_high");
+  if (!["recent", "updated", "name_asc", "name_desc", "price_low", "price_high", "market_low", "market_high"].includes(sort)) {
+    throw new Error("sort must be recent, updated, name_asc, name_desc, price_low, price_high, market_low, or market_high");
   }
 
   return {
diff --git a/apps/api/tests/domain/search-query.test.js b/apps/api/tests/domain/search-query.test.js
index 5e1afc2..8ed1f49 100644
--- a/apps/api/tests/domain/search-query.test.js
+++ b/apps/api/tests/domain/search-query.test.js
@@ -66,6 +66,8 @@ test("accepts only the supported public search sort values", () => {
   assert.equal(createSearchQuery({ sort: "updated" }).sort, "updated");
   assert.equal(createSearchQuery({ sort: "name_asc" }).sort, "name_asc");
   assert.equal(createSearchQuery({ sort: "name_desc" }).sort, "name_desc");
+  assert.equal(createSearchQuery({ sort: "market_low" }).sort, "market_low");
+  assert.equal(createSearchQuery({ sort: "market_high" }).sort, "market_high");
   assert.throws(
     () => createSearchQuery({ sort: "random" }),
     /sort must be recent/,
diff --git a/apps/web/src/components/atoms/CatalogSortSelect.stories.js b/apps/web/src/components/atoms/CatalogSortSelect.stories.js
index 3569430..915def9 100644
--- a/apps/web/src/components/atoms/CatalogSortSelect.stories.js
+++ b/apps/web/src/components/atoms/CatalogSortSelect.stories.js
@@ -4,3 +4,4 @@ export default { title: 'Atoms/CatalogSortSelect', component: CatalogSortSelect
 
 export const RecentlyAdded = { args: { modelValue: 'recent' } };
 export const NameAscending = { args: { modelValue: 'name_asc' } };
+export const MarketValueDescending = { args: { modelValue: 'market_high' } };
diff --git a/apps/web/src/components/atoms/CatalogSortSelect.vue b/apps/web/src/components/atoms/CatalogSortSelect.vue
index abe5fb6..a0cb4cb 100644
--- a/apps/web/src/components/atoms/CatalogSortSelect.vue
+++ b/apps/web/src/components/atoms/CatalogSortSelect.vue
@@ -19,6 +19,8 @@ defineEmits(['update:modelValue']);
       <option value="name_desc">Name Z-A</option>
       <option value="price_low">Price: low to high</option>
       <option value="price_high">Price: high to low</option>
+      <option value="market_low">Market value: low to high</option>
+      <option value="market_high">Market value: high to low</option>
     </select>
   </label>
 </template>
diff --git a/docs/IMPLEMENTATION-STATUS.md b/docs/IMPLEMENTATION-STATUS.md
index 0dcd745..a6c41bb 100644
--- a/docs/IMPLEMENTATION-STATUS.md
+++ b/docs/IMPLEMENTATION-STATUS.md
@@ -166,6 +166,7 @@ Remaining roadmap areas are approved external provider credentials/adapters, bro
 - Public catalog sorting now supports recently added, recently updated, name A-Z, name Z-A, price low-to-high, and price high-to-low through a URL-synchronized atomic sort control. Broader inventory filter parity and market-value sorting remain.
 - Public catalog filtering now supports URL-synchronized set, event, and tag text filters through a reusable atomic text-filter control and the shared search API.
 - Public catalog filtering now supports explicit Available, Pending, Sold, and All status modes plus a 30-day Newly added toggle through the shared search API and atomic controls.
+- Public catalog sorting now supports latest manual/calculated market value low-to-high and high-to-low, with null values placed last.
 
 ## Local Commands