diff --git a/src/auction.test.ts b/src/auction.test.ts
index a52d2fe..2db2917 100644
--- a/src/auction.test.ts
+++ b/src/auction.test.ts
@@ -22,6 +22,7 @@ const creatorInitialBalance = 1000000000000;
 const bidderInitialBalance = 20000000;
 const lowestBidAmount = 10000000;
 
+// TODO: Check exact balances by subtracting the fees
 const auctionTests = () => {
   let registry: Registry;
   let auctionId: string;
@@ -168,6 +169,8 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
 
   let auctionCreatorAccount: { address: string, privateKey: string };
   let bidderAccounts: { address: string, privateKey: string, bid?: any }[] = [];
+  let sortedBidders: { address: string, privateKey: string, bid?: any }[] = [];
+  let invalidBidderAddresses: string[] = [];
 
   const bidAmounts: Coin[] = bidsAmount.map(amount => coin(amount.toString(), DENOM));
   const numBidders = bidAmounts.length;
@@ -219,10 +222,10 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
 
     const [{ type, quantity }] = creatorAccountObj.balance;
     const actualBalance = parseInt(quantity);
-    const expectedBalance = creatorInitialBalance - (parseInt(maxPrice.amount) * numProviders);
+    const expectedBalance = creatorInitialBalance - (parseInt(maxPrice.amount) * numProviders) - 200000;
 
     expect(type).toBe(DENOM);
-    expect(actualBalance).toBe(expectedBalance - 200000);
+    expect(actualBalance).toBe(expectedBalance);
   });
 
   test('Commit bids.', async () => {
@@ -231,6 +234,16 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
       await registry.commitBid({ auctionId, commitHash: bidderAccounts[i].bid.commitHash }, bidderAccounts[i].privateKey, fee);
     }
 
+    sortedBidders = bidderAccounts.slice().sort((a, b) => {
+      return parseInt(a.bid.reveal.bidAmount) - parseInt(b.bid.reveal.bidAmount);
+    });
+
+    for (const bidder of sortedBidders) {
+      if (parseInt(bidder.bid.reveal.bidAmount) > parseInt(maxPrice.amount)) {
+        invalidBidderAddresses.push(bidder.address);
+      }
+    }
+
     const [auction] = await registry.getAuctionsByIds([auctionId]);
     expect(auction.status).toEqual('commit');
     expect(auction.bids.length).toEqual(numBidders);
@@ -251,20 +264,35 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
     expect(auction.status).toEqual('reveal');
 
     for (let i = 0; i < numBidders; i++) {
-      await registry.revealBid({ auctionId, reveal: bidderAccounts[i].bid.revealString }, bidderAccounts[i].privateKey, fee);
+      try {
+        await registry.revealBid(
+          { auctionId, reveal: bidderAccounts[i].bid.revealString },
+          bidderAccounts[i].privateKey,
+          fee
+        );
+      } catch (error: any) {
+        if (invalidBidderAddresses.includes(bidderAccounts[i].address)) {
+          expect(error.toString()).toContain(INVALID_BID_ERROR);
+        } else {
+          throw error;
+        }
+      }
     }
   });
 
   test('Check bids are revealed', async () => {
     const [auction] = await registry.getAuctionsByIds([auctionId]);
     expect(auction.status).toEqual('reveal');
-    auction.bids.forEach((bid: any) => {
-      expect(bid.status).toEqual('reveal');
+
+    const validBids = sortedBidders.map((bidder: any) => {
+      if (invalidBidderAddresses.includes(bidder.address)) {
+        return '0';
+      }
+      return bidder.bid.reveal.bidAmount;
     });
 
-    const expectedBidAmounts = bidAmounts.map(bidAmount => { return { quantity: bidAmount.amount, type: bidAmount.denom }; });
-    const actualBidAmounts = auction.bids.map((bid: any) => bid.bidAmount);
-    expect(actualBidAmounts).toEqual(expect.arrayContaining(expectedBidAmounts));
+    const actualBidAmounts = auction.bids.map((bid: any) => `${bid.bidAmount.quantity}${bid.bidAmount.type}`);
+    expect(actualBidAmounts).toEqual(expect.arrayContaining(validBids));
   });
 
   test('Wait for auction completion.', (done) => {
@@ -278,12 +306,9 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
     const [auction] = await registry.getAuctionsByIds([auctionId]);
     expect(auction.status).toEqual('completed');
 
-    const sortedBidders = bidderAccounts.slice().sort((a, b) => {
-      return parseInt(a.bid.reveal.bidAmount) - parseInt(b.bid.reveal.bidAmount);
-    });
-
+    // Filter bidders to exclude bids exceeding maxPrice
     const filteredBidders = sortedBidders.filter(bidder => {
-      return parseInt(bidder.bid.reveal.bidAmount) <= parseInt(maxPrice.amount);
+      return parseInt(bidder.bid.reveal.bidAmount) <= parseInt(`${maxPrice.amount}${maxPrice.denom}`);
     });
 
     const numWinners = Math.min(filteredBidders.length, numProviders);
@@ -343,6 +368,6 @@ const providerAuctionTestsWithBids = (bidsAmount: number[], numProviders: number
 };
 
 describe('Vickrey Auction', () => auctionTests());
-const randomBids = [10002000, 10009000, 10006000, 10004000];
+const randomBids = [10002000, 10009000, 10006000, 100040000];
 describe('Provider Auction', () => providerAuctionTestsWithBids(randomBids, 3));
 describe('Provider Auction', () => providerAuctionTestsWithBids(randomBids, 5));
diff --git a/src/types/cerc/onboarding/message.ts b/src/types/cerc/onboarding/message.ts
index 1056704..fa27d5b 100644
--- a/src/types/cerc/onboarding/message.ts
+++ b/src/types/cerc/onboarding/message.ts
@@ -16,6 +16,7 @@ export interface MsgOnboardParticipantEncodeObject extends EncodeObject {
 }
 
 export const ONBOARDING_DISABLED_ERROR = 'Onboarding is disabled';
+export const INVALID_BID_ERROR = 'Bid is higher than max price';
 
 interface ethPayload {
   address: string