Well, no. They can sell the item as long as they want to. Depends what it is. If it's a brush pack for instance, that would have multiple buys. But if it's an item they want to sell once, then they would have to lock the topic once it has been sold.
The Marketplace on my forum is slightly different to what it would be in the shop. Obviously with the marketplace being a forum board, people can ask questions, make offers or whatever. If it was in the shop, you wouldn't have that. But the idea was to have the ability for people to upload there own items for sale in the shop. A simple idea really. They would go to the shop and have an option upload their own files. Select price, amount, category etc, and just generally build up the shop items so there are more things to choose from.
I just like the idea of having everything in the shop area rather than using the forums.
I don't mean to over complicate this. I simply would like users to be able to add their own items to the shop's list. That's it really. I can't think of how to explain any further. I've said everything I can.
One more reason I wanted this idea. The Marketplace is fine for users to sell things, but if they had a multiple sales item, they would have to manage PM's and messages from everybody who wants the item and then manually send the item to each of them. This could be really tedious and time consuming. If they could upload a file in the shop, it would all be automatic. You see what I mean?
I do understand it will probably take a fair bit of coding actually. The users would have to receive credits from their own items so that would have to be set up. And of course a panel in which they can manage their own items; edit, delete etc. I don't know. Maybe I'm asking too much. It was just an idea. I'm happy with my forums Marketplace for now.
Peace, Lance