An auto pricer, like the ones already on this site, but so that the price ends in 0 or 5 to make it look more legit. i.e. 92837 is a weird price, compared to 92850, or something like that.
While not all people price their items ending in 5s or 0s, a lot of people do. So, I think it would be a neat optional function for a pricer to have. Good idea!