I run the main OB store, and I haven't noted problems selling. One of the difficulties of running a p2p network is that you cannot control how up to date the software is from other peers. We try to keep as much compatibility as possible when making changes, but the network has been live over a year now and never everyone stays updated.

Many of the problems we had with the current version are also alleviated with the 2.0 we are releasing soon.