mikmaxx , if you are still with us...this question comes up about once every month. If you had access to a fully equipped machine shop, you could probably build one yourself for about $1000 and a lot of hours. Three companies make kits where you assemble the machined parts. More money, but less skilled labor involved. If you check out the used market on RCmarketplace, you will find the cheapest used unit around $1900 or so...if you find one priced much lower than this, there is probably a real good reason.