Honestly, it's the way to go. No buyers remorse, you don't have to go through others opinions, which vary, because everyone likes something different in a board. I try to demo every board I purchase.
It's usually like $35 or so a day, you can trade in and out a few times (I have found the max to do is about 3 day, because you need a couple hours to get used to each board - sometimes longer). Most shops will apply your rental to the cost of the board.