Simple shopping cart and plugin for Intuit Hosted PayPage

We’re a small non-profit music group that takes online credit card orders for maybe 20 tickets a month. We have a Quickbooks Merchant’s Account to process credit cards at the door. What’s the simplest shopping cart to use (something similar to PayPal’s “Buy Now” button for 4-5 concerts) and simplest way to use the Intuit Hosted PayPage service – all the credit card information would be entered and processed on their server, so we wouldn’t have to worry about SSL and all that. Cart 66 Cloud looked like it might do the job, but their support is by email only, which makes me nervous.
Thanks!