Think about this! in the rights managed industry (RM) at GI or whatever traditional agency. Buyers go there and buy for very specific reasons and most of the time they are prepared to pay.
Yet! believe it or not but sales above $. 200-300 gross, are not all that common anymore ( used to be thousands of dollars many years back).
Overpricing yourself isn't going to help, might insted lose sales. Pricing is a very intricate and psychological factor.