diff --git a/packages/contract/script/pay/DeployDaimoPayAxelarBridger.s.sol b/packages/contract/script/pay/DeployDaimoPayAxelarBridger.s.sol
index d0b40bda1..75b5cbd84 100644
--- a/packages/contract/script/pay/DeployDaimoPayAxelarBridger.s.sol
+++ b/packages/contract/script/pay/DeployDaimoPayAxelarBridger.s.sol
@@ -77,17 +77,13 @@ contract DeployDaimoPayAxelarBridger is Script {
             chainIds[0] = BSC_MAINNET;
 
             for (uint32 i = 0; i < chainIds.length; ++i) {
-                uint256 fee = block.chainid == POLYGON_MAINNET
-                    ? 3000000000000000000 // 3.0 POLYGON
-                    : 300000000000000; // 0.0003 ETH
-
                 bridgeRoutes[i] = DaimoPayAxelarBridger.AxelarBridgeRoute({
                     destChainName: _getAxelarChainName(chainIds[i]),
                     bridgeTokenIn: _getAxlUsdcAddress(block.chainid),
                     bridgeTokenOut: _getAxlUsdcAddress(chainIds[i]),
                     bridgeTokenOutSymbol: "axlUSDC",
                     receiverContract: axelarReceiver,
-                    fee: fee
+                    fee: _getAxelarFeeByChain(block.chainid)
                 });
             }
         } else if (block.chainid == BSC_MAINNET) {
@@ -108,7 +104,7 @@ contract DeployDaimoPayAxelarBridger is Script {
                     bridgeTokenOut: _getAxlUsdcAddress(chainIds[i]),
                     bridgeTokenOutSymbol: "axlUSDC",
                     receiverContract: axelarReceiver,
-                    fee: 2_000_000_000_000_000 // 2 * 10^15 = 0.002 BNB
+                    fee: _getAxelarFeeByChain(block.chainid)
                 });
             }
         } else {
@@ -130,6 +126,22 @@ contract DeployDaimoPayAxelarBridger is Script {
         }
     }
 
+    /**
+     * Get the Axelar bridging gas fee for a given chain. The fee should be
+     * approximately worth $1 USD.
+     */
+    function _getAxelarFeeByChain(
+        uint256 chainId
+    ) private pure returns (uint256) {
+        if (chainId == POLYGON_MAINNET) {
+            return 4_000_000_000_000_000_000; // 4 * 10^18 = 4 POL
+        } else if (chainId == BSC_MAINNET) {
+            return 2_000_000_000_000_000; // 2 * 10^15 = 0.002 BNB
+        } else {
+            return 500_000_000_000_000; // 5 * 10^14 = 0.0005 ETH
+        }
+    }
+
     // Exclude from forge coverage
     function test() public {}
 }
diff --git a/packages/contract/src/pay/DaimoPayAxelarBridger.sol b/packages/contract/src/pay/DaimoPayAxelarBridger.sol
index 91fb7ec69..9e56bb666 100644
--- a/packages/contract/src/pay/DaimoPayAxelarBridger.sol
+++ b/packages/contract/src/pay/DaimoPayAxelarBridger.sol
@@ -24,7 +24,6 @@ contract DaimoPayAxelarBridger is
     Ownable2Step
 {
     using SafeERC20 for IERC20;
-    using Strings for address;
 
     struct AxelarBridgeRoute {
         // Axelar requires the name of the destination chain, e.g. "base",
@@ -271,7 +270,7 @@ contract DaimoPayAxelarBridger is
             axelarGasService.payNativeGasForExpressCallWithToken{value: fee}(
                 address(this),
                 destChainName,
-                receiverContract.toHexString(),
+                Strings.toHexString(receiverContract),
                 abi.encode(toAddress),
                 outTokenSymbol,
                 outAmount,
@@ -281,7 +280,7 @@ contract DaimoPayAxelarBridger is
             axelarGasService.payNativeGasForContractCallWithToken{value: fee}(
                 address(this),
                 destChainName,
-                receiverContract.toHexString(),
+                Strings.toHexString(receiverContract),
                 abi.encode(toAddress),
                 outTokenSymbol,
                 outAmount,
@@ -298,7 +297,7 @@ contract DaimoPayAxelarBridger is
         });
         axelarGateway.callContractWithToken(
             destChainName,
-            receiverContract.toHexString(),
+            Strings.toHexString(receiverContract),
             abi.encode(toAddress),
             outTokenSymbol,
             outAmount
diff --git a/packages/daimo-common/src/daimoPay.ts b/packages/daimo-common/src/daimoPay.ts
index 3ca5d35f9..c4b94033e 100644
--- a/packages/daimo-common/src/daimoPay.ts
+++ b/packages/daimo-common/src/daimoPay.ts
@@ -11,7 +11,7 @@ import {
 } from "viem";
 import z from "zod";
 
-import { BigIntStr, zAddress } from "./model";
+import { BigIntStr, zAddress, zBigIntStr } from "./model";
 
 // lifecycle: waiting payment -> pending processing -> start submitted -> processed (onchain tx was successful)
 export enum DaimoPayOrderStatusSource {
@@ -56,7 +56,7 @@ export interface DaimoPayOrderItem {
 
 export const zBridgeTokenOutOption = z.object({
   token: zAddress.transform((a) => getAddress(a)),
-  amount: z.string().transform((a) => BigInt(a)),
+  amount: zBigIntStr.transform((a) => BigInt(a)),
 });
 
 export const zBridgeTokenOutOptions = z.array(zBridgeTokenOutOption);
@@ -135,8 +135,8 @@ export type DaimoPayHydratedOrder = {
   id: bigint;
   intentAddr: Address;
   bridgeTokenOutOptions: DaimoPayTokenAmount[];
-  bridgeTokenOutAddr: Address | null;
-  bridgeTokenOutAmount: bigint | null;
+  selectedBridgeTokenOutAddr: Address | null;
+  selectedBridgeTokenOutAmount: bigint | null;
   destFinalCallTokenAmount: DaimoPayTokenAmount;
   destFinalCall: OnChainCall;
   destRefundAddr: Address;