Shifters are mostly under 20 bucks at a dealer.
AND, shifters are usually pretty common between brands..I.E Honda spline count, and shaft Dia. is same as Yamaha Shaft Dia. and spline count on some models.
Find a good MC shop, take the stub end in, and become friends with the parts guy. If he's any good, I'll bet you'll be there under 20 min.