bungbon throttles are cheap and awesome
I've bought a few of them in the past and Im pretty happy. they also fit straight onto the 2 stroke carb slides
you can also get them in a variety of different styles
-no buttons (switches)
-normally open or closed button (switches
-two buttons (one normally open and one closed)
great for a kill switch or starter motor etc
Id imagine youd need to spend over a hundred dollars to get something better than this.
but for an MX bike or race bike Id rather have a throttle thats so cheap I can keep a spare in my toolbox for if I crash.
I have a few of these and the cheapest Iv found is around $20 from a trustworthy scooter shop in South East Asia.
I bought it and didnt hear from him for months, turned out his whole town got whipped out in the huge floods they had. I got an email from him once they got their internet reconnected in the town and he gave me his word that once he got back on his feet he would send me the goods. Two months later they turned up
Heres his throttle stock, and lots more to choose from other than the bungbon's (if the name turns you off haha)
http://www.akunar.com/THROTTLES.htm