I'm just a couple days into using e-junkie. And I want to first say you have a very impressive site with a great deal of functionality.
So I sincerely want to do e-junkie a favor in recognition of your hard work and let you know why I probably won't continue beyond the first week trial.
It's extremely ironic that for all the functionality present, you do not offer what should be a quite simple function call to return a remaining stock for an inventory item so the user can slap it on their web page for their customers to see. That is a very cool feature that I know MANY users would love to see.
I don't know how much more classic or fundamental such a feature needs to be for you to implement it. And for you not to offer it is just a mind blower. Especially since the post I saw from "guest_user" was from November? Four months ago?
It's great that you offer an inventory quantity. And you obviously make a call to retrieve the value of the remaining stock when a user presses on a "buy" button in order to determine whether or not to display the message "item no longer available" - or whatever it says.
I would take the time to do a funky work-around and embed some code in the "thank you" page. But first I'll check out the features of one of your competitors. I'd love to stick around beyond a week. But the lack of such a fundamental feature will probably be a deal breaker.
I hope you take this post as it was meant to be: constructive criticism. Best of luck to you.