Things have changed for all of us around here since that dreadful morning in October. I truly believe one of the only solutions to all of the scamming and hacking is to just do personal business with one or two main vendors that you may have developed a relationship with over the past 2 years. Of course payments should still be anonymous and messages encrypted but I see no reason why we need a marketplace that just lists all of the items available when we can conduct fee-free business through direct and encrypted communication methods.
TheMarketplace seems to be a good potential alternative (IMO)
There will always be a demand for this stuff.