With BB socks there is no central exchange where all offers are shown in one place. I wouldn't want to but I:m not able to use market orders on BB, I always thought that no one could, if you can and you're willing to pay any price its hard to imagine your order won't fill. Perhaps no one wants to sell, that's is a good thing right? I won't even touch the corrupt market maker comment, except to say its not congruent .