I have alot of Sport autographs from Uppder Deck, Toops Etc?

I have alot of sports autographs certified from the best. I ahve guys such as arod, griffey, mannings, jordan, brady, favre, wade, bryant, tomlinision, and alot of big names. Do you guys think it would be a good time to sell or should I hold on to alittle more. Who should I try to sell, should I go on ebay?