Everyone will bag me but for a good cheap shock I have used Progressive (made in Mexico), they aren't adjustable in damping and aren't nitrogen pressurized but I have used them on my RM125B race bike and have a set for an emergency spare for my KX250 (painted in S&W colours).
I only paid $180, brand new, for the pair off ebay, I don't care if they only last a year at that price, they do have a 12 month warranty though.
They were a little underdamped on the RM but I feel the damping rates are perfect on the KX.
Flame suit on!