if you're gonna buy an MBC, buy a CHEAP one. iirc, DocJonez' was like $12, wasnt it? otherwise, save up a bit and just buy an EBC used off ebay.
anthough... if you're interested, i have a DNA manual boost controller that i bought for like $90 when i was young and stupid....
i hardly used it, and it works fine. so tell me if you want it and we can work out a price.