There's also moto trackdays which IMO is a more visceral experience. About $200 bucks per day in Mission with WMRC, obviously more with fancier tracks like Area 27 or the Ridge. Outside of liter-class sportbikes, most don't burn through gas, brakes, or tires nearly as quick.
I run a 650 twin (Suzuki SV), and they're quite cheap on consumables in general. At novice-intermediate pace you can pretty much run street tires, or even sport-touring tires. Ninja 250s are even cheaper to run.