diff --git a/src/modifier/modifier-type.ts b/src/modifier/modifier-type.ts
index 112a3c9aa35..4578d568955 100644
--- a/src/modifier/modifier-type.ts
+++ b/src/modifier/modifier-type.ts
@@ -2536,7 +2536,7 @@ export class ModifierTypeOption {
   constructor(type: ModifierType, upgradeCount: number, cost: number = 0) {
     this.type = type;
     this.upgradeCount = upgradeCount;
-    this.cost = Math.min(Math.round(cost), Number.MAX_SAFE_INTEGER);
+    this.cost = Math.min(Math.round(cost / 10) * 10, Number.MAX_SAFE_INTEGER);
   }
 }