I think that $10 is a reasonable bet to try out something that could save someone a lot of time and effort. Having a minimum helps weed out the casual tire-kick

I think that $10 is a reasonable bet to try out something that could save someone a lot of time and effort. Having a minimum helps weed out the casual tire-kickers. The people that pay the $10 to try it out _want_ to make this service work for them.