Where do you find an OS Speed for $400? The ones I see are from $450 and up. Much higher cost than a Speed II and that's without shipping.
There are several guys that sell them on ebay for $400. I personally got mine from
cjm1126 on here for $400 shipped to my door. Not sure if he still has any, or can get any, but if he does that would be the way to go. Very cool guy with fast shipping. There are lots of places aroung with them for $400 or under, you just gotta do some looking. I know rc-toro.com has them for $385 + shipping from HK.