I'm currently updating the website for an organization that has decided that they'd like to have a tiny store front to sell a small amount of merchandise. Mostly downloadable print materials.

I've played around with a few ecommerce solutions (wp ecommerce & woocommerce), but they seem way to advanced for the items they want to sale (seriously less than 10) and the conflicts between their files and ata's files are infuriating. Unfortunately, it does need to be a full on thing, so paypal buttons won't quite work.

Has anyone encountered a ecommerce plugin that works out of the box with Atahualpa?

The site is being set up with:

WP 3.4
ATA 3.7.7

I trialled a few and I too found them extremely frustrating...

If you only have a few items then I think the free version of Ecwid - http://www.ecwid.com/ would do just fine...

I have a demo site using atahualpa and a store set up at http://www.handcraftedjewelleryby.me/store-2/