diff --git a/README.md b/README.md
index 3a3bc911..9a9c0f9c 100644
--- a/README.md
+++ b/README.md
@@ -349,6 +349,26 @@ if (process.platform === 'darwin') {
 }
 ```
 
+##### Top up to ETH or SOL wallets
+
+```ts
+const turbo = TurboFactory.unauthenticated({ token: 'ethereum' });
+
+const { url, winc, paymentAmount } = await turbo.createCheckoutSession({
+  amount: USD(10.0), // $10.00 USD
+  owner: publicEthereumAddress,
+});
+```
+
+```ts
+const turbo = TurboFactory.unauthenticated({ token: 'solana' });
+
+const { url, winc, paymentAmount } = await turbo.createCheckoutSession({
+  amount: USD(10.0), // $10.00 USD
+  owner: publicSolanaAddress,
+});
+```
+
 #### `uploadFile({ fileStreamFactory, fileSizeFactory, signal, dataItemOpts })`
 
 Signs and uploads a raw file. The provided `fileStreamFactory` should produce a NEW file data stream each time is it invoked. The `fileSizeFactory` is a function that returns the size of the file. The `signal` is an optional [AbortSignal] that can be used to cancel the upload or timeout the request. `dataItemOpts` is an optional object that can be used to configure tags, target, and anchor for the data item upload.
diff --git a/src/common/payment.ts b/src/common/payment.ts
index 91dda8d0..dc0d4418 100644
--- a/src/common/payment.ts
+++ b/src/common/payment.ts
@@ -145,7 +145,7 @@ export class TurboUnauthenticatedPaymentService
       promoCodes.length > 0
         ? `&${this.appendPromoCodesToQuery(promoCodes)}`
         : ''
-    }`;
+    }&token=${this.token}`;
 
     const { adjustments, paymentSession, topUpQuote } =
       await this.httpService.get<TopUpRawResponse>({