I was very disappointed with the National. Prices on Boxes was ok, but I honestly could have drove 20 minutes down the road and received better prices on wax. Singles were extremely over priced on prospect items. I had to have walked away from 5 dealers at least laughing. I did pick up a few boxes from blowout and bust them there. Blowout was great, can't say much for the other vendors.
Better to buy slabs on Blowout, due to the fact majority of members will lie about condition to make a quick buck.