i can tell about wp-commerce plugin who provide bad support u can check there forum numerous unreplied support topic there need your money there are not gpl
Also take a look at PHPurchase, a relatively new WordPress Ecommerce plugin. We’ve put an emphasis on making it easy to install and configure with screencast tutorials, help articles, and even live chat embedded into the help page of the plugin.
I’ve had awful experiences with both wp e-commerce and shopp.
The problem with these plugins is that neither of them are completely stable. Neither has decent support (like within 24 hours) and neither work properly on WP3+.
I’m just about to go crazy trying to fix a bug in Shopp for a client. Starting to think it would be easier to build the whole thing again from scratch.
I agree. The first plug-in developers that come up with a stable, reliable, easy to use plug-in will clean up IMO.
There are waaaay too many tales of woe re getting various e-commerce pluging to work. Pity, I had high hopes for shopp.