Posted By:
Mark SteinbergMastro has always charged me 15% to consign. I believe this is still their standard rate. I am SURE that if Skydash negotiated at all, he was able to list these for less than the standard 15% commission (considering the breadth of items being offered).
The consignment fee is definitely negotiable, and savvy consignors will contact multiple auctions for the best rate. For this type of item, Mastro was probably a good choice (even though prices fell a bit short of expectation). Mastro's client list and expertise with high-end cards is likely second-to-none.
If the realized prices were disappointing, I don't think the problem was anything to do with Mastro. These cards received maximum exposure, to be sure.