I'd love to get another controller so that I can play some games with my daughter on the TV, particularly Get Packed which looks fun, but £59 is too expensive imo, £10 more than an Xbox One controller and £15 more than a PS4.
It just seems steep which is a shame as it would get me buying more games, maybe they could offer some discount for pro members, or anyone that's purchased X games or something.
In general though, love Stadia, had it from the beginning and will continue with it, keep up the good work Stadia team!
I got some used ones for less money on ebay-kleinanzeigen (something like craigs list in germany)