All my mates run Hot Tunings, and they were doing some on ebay for about 200 including postage? Just had a quick look, and they've only of the Mk1 and PH1 on their. But yea, they go crazy low!
I've got V-Maxx's, and they handle pretty good. Plus are also pretty low. I could touch the floor with the front all the way down, and the back is a nice load down. But like JCC said, not amazingly low.
On ebay their is Jamex ones for 325? Don't know how good they are/how low they actually go. But it's another brand to think about and they seem to be claiming 80mm.
I'm keen on my V-Maxx's, just gotta get my rear adjusters out when I get my camber sorted.