Yeah, I tend to try to support new projects doing things different just because I want them to grow. At the moment it costs them approx 1.25 cents per search, which is what pricing is based on (they also need to offset the searches for free trials so the price is a little higher) but presumably there are fixed costs that will mean this cost can come down as the userbase grows. $5 is also not much to me, but it can mean a lot to the service which is young and founder-funded.