They quoted me 800/yr for a Grom, same as an R3.I'd say give it a shot but they aren't cheap lol, market was strong before covid can't imagine it now.
Even still for $40/month insurance (maybe lower for you) maybe why not.
Gymkhana is literally the only reason I'd be interested in a sportbike. That looks like a ******** of fun and something I'd like to try, but it's just impossible to do that sort of thing on a 900# cruiser with a (if you're lucky) 35 degree lean angle. Pretty sure my Voyager won't even get that much before hitting the pipes - I've scraped them before. I did hit 35 degrees once on my VTX but everything was higher on that bike except the seating position.