Marketplace is there for the convenience of our members to sell their own phones on a personal basis. It is not there for traders to sell equipment in bulk.
For this reason we require that a member wishing to sell is known and trusted by CrackBerry management. That is why we require a minmum of 100 posts prior to permitting sales.
The Markeplace forum is closely monitored and we receive lots of feedback on how sales are going.
If you are selling just one phone then that is fine but if you want to start selling several (no, I do not have a maximum number) then this would not be an appropriate place for you to begin sales.