diff --git a/src/backend/drivers/kv/costs.ts b/src/backend/drivers/kv/costs.ts
index 2385dafd5..3c3fcab6a 100644
--- a/src/backend/drivers/kv/costs.ts
+++ b/src/backend/drivers/kv/costs.ts
@@ -20,6 +20,6 @@
 // Microcents per underlying DynamoDB capacity unit, as reported by
 // SystemKVStore.KVUsage. Cost is `KV_COSTS[op] * usage.<op>`.
 export const KV_COSTS = {
-    'kv:read': 63,
-    'kv:write': 125,
+    'kv:read': 17,
+    'kv:write': 90,
 } as const;