I use FotoQuote for pricing stock photography and am very happy with it. I tried BlinkBid but at that time it didn't offer stock photo pricing. I just checked their website and it doesn't look like they're offering it now, either. I guess it depends on how you intend to use the software. If you need to price stock photography, FotoQuote is the way to go. If you need to bid assignments and/or studio work, BlinkBid is probably a better option.
Good luck.