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JimBEbay could be good, but you should consider how much your time is worth. Selling a few hundred cards individually on ebay is a big time commitment. I would consider consigning to one of the smaller auction houses like Barry's that will divide it up into multiple lots (perhaps organized by team or grade or whatever). One other suggestion that would probably sell a good chunk of them is to put a big list on the BST here. Be clear that prices are firm, include shipping in the US, and go on a first come first serve basis. You will probably sell a lot of them that way at the price you want and without consignment fees. Set the prices at fair levels. If you set them too high, you will just be wasting your time. Then consign the rest.
JimB