I have essentially the opposite opinion of everyone here--
make it free for d1 (d1 players only, so no cheating), leave everyone to pay everywhere else. this might encourage more battles at d1, where the majority seemingly wants them to increase.
At d2 and d3, I've always felt that when and where to scout was a valuable piece of strategy, and i've treated it as such. In d1, I scout the 8 states nearest me, and maybe a couple of others where i like a specific player, and never worry about the money. also, isn't moy's non-use of FSS (and i know at least one other good coach who doesn't use it at all) a similar strategic decision that would be taken away if FSS were made free?