[Balanor]

I guess it could be considerd a bug, but it's more of a NWN setting since is not possible to completely disable item selling for a NWN store unless the item itself is undroppable or plot. The workaround to this would require giving the PC back the item and taking the 1 GP away from them and crediting it back to the store. For only 1 GP an item, I just haven't seen the need to try and do this yet, however it has been/is something on an issues list that may be addressed at some point in the future.

It is assumed that other characters will see the low price and not attempt to sell anything to the store...