$50/shipped with 2 nipple fittings and 'muffler' (40 micron filter fitting)
Several vouches (search my screen name), something like 200+ on ebay (100%).
My ebay feedback
Same solenoid Hondata sells for twice the price. You can also use this with eCtune, Crome Pro GOLD, and AEM ems. You could ALSO use this with a MBC and a switch to make your own 2-stage MBC for half the price of a TurboXS 2-stage (1 MBC+spring pressure or 2 MBC's).
FYI I have a small handful of these, 3 are now left, 1 may be spoken for soon.