diff --git a/src/validation/CampaignSchema.test.ts b/src/validation/CampaignSchema.test.ts
index ba2b81027..87390cdc4 100644
--- a/src/validation/CampaignSchema.test.ts
+++ b/src/validation/CampaignSchema.test.ts
@@ -1,7 +1,20 @@
 import { parseISO } from "date-fns";
 import { produce } from "immer";
-import { CampaignFormat, CampaignPacingStrategies } from "../graphql/types";
+import {
+  BillingType,
+  CampaignFormat,
+  CampaignPacingStrategies,
+} from "graphql/types";
 import { CampaignSchema } from "./CampaignSchema";
+import { AdvertiserPriceFragment } from "graphql/advertiser.generated";
+
+const prices: AdvertiserPriceFragment[] = [
+  {
+    format: CampaignFormat.PushNotification,
+    price: "6",
+    billingType: BillingType.Cpm,
+  },
+];
 
 const validCampaign = {
   name: "some campaign",
@@ -22,7 +35,7 @@ const validCampaign = {
 };
 
 it("should pass on a valid object", () => {
-  CampaignSchema.validateSync(validCampaign);
+  CampaignSchema(prices).validateSync(validCampaign);
 });
 
 it("should fail if the campaign start date is in past", () => {
@@ -31,7 +44,7 @@ it("should fail if the campaign start date is in past", () => {
   });
 
   expect(() =>
-    CampaignSchema.validateSync(c),
+    CampaignSchema(prices).validateSync(c),
   ).toThrowErrorMatchingInlineSnapshot(
     `"Start Date must be minimum of 2 days from today"`,
   );
diff --git a/src/validation/CampaignSchema.tsx b/src/validation/CampaignSchema.tsx
index 06c853eba..796156132 100644
--- a/src/validation/CampaignSchema.tsx
+++ b/src/validation/CampaignSchema.tsx
@@ -15,6 +15,7 @@ import { TrailingAsteriskRegex } from "validation/regex";
 import { CreativeSchema } from "validation/CreativeSchema";
 import { BillingType, CampaignFormat } from "graphql/types";
 import { AdvertiserPriceFragment } from "graphql/advertiser.generated";
+import BigNumber from "bignumber.js";
 
 export const MIN_PER_DAY = 33;
 export const MIN_PER_CAMPAIGN = 100;
@@ -81,7 +82,7 @@ export const CampaignSchema = (prices: AdvertiserPriceFragment[]) =>
             prices,
             CampaignFormat.PushNotification,
             BillingType.Cpc,
-            0.1,
+            "0.1",
             schema,
           ),
       })
@@ -93,7 +94,7 @@ export const CampaignSchema = (prices: AdvertiserPriceFragment[]) =>
             prices,
             CampaignFormat.PushNotification,
             BillingType.Cpm,
-            5,
+            "5",
             schema,
           ),
       })
@@ -105,7 +106,7 @@ export const CampaignSchema = (prices: AdvertiserPriceFragment[]) =>
             prices,
             CampaignFormat.NewsDisplayAd,
             BillingType.Cpm,
-            9,
+            "9",
             schema,
           ),
       })
@@ -178,12 +179,15 @@ export function findPrice(
   prices: AdvertiserPriceFragment[],
   format: CampaignFormat,
   billingType: BillingType,
-  defaultPrice: number,
+  defaultPrice: string,
   schema: NumberSchema<number | undefined, AnyObject, undefined, "">,
 ) {
   const found = prices.find(
     (p) => p.format === format && p.billingType === billingType,
   );
-  const price = Number(found?.price) ?? defaultPrice;
-  return schema.min(price, `${billingType} price must be ${price} or higher`);
+  const price = BigNumber(found?.price ?? defaultPrice);
+  return schema.min(
+    price.toNumber(),
+    `${billingType} price must be ${price} or higher`,
+  );
 }