Although it didn't have all of the bells and whistles of a full blown shopping cart, it did the 'basics'. If we had something like that on xF, I'd be happy. But, I'd love to see a fully functional shopping cart solution with xenForo.
Hmmm ok cool. I'm working on setting up OSCommerce the way i want it right now as I really cannot wait for a new option to get my store back up and running, but I'll check it out when he comes out with it.
I hope to see this as an official xenforo product in the near future, encompassed into something like a download / mini cart product with semi-simplistic functionality... I think integration for advanced carts is the best for anything too advanced.