As a vendor, I believe what happened is that either the vendor or the tester later found a problem when it was released, then made it unavailable while it's being corrected, or could've released it by mistake before it was ready.

I do agree that it's a disappointment when customers try to put it in their cart, what Renderosity needs to do is replace the image with a "temporarily unavailable" image, or simply have "temporarily unavailable" word on the image itself, this way we know we will have to wait till it's available.  Then when it does become available, I believe Renderosity extends the time to make up for the time it wasn't available.

...wolfie