They are a top rated eBay seller and if you pay with PayPal., your protected at three levels including your credit card company, just saying their prices are all over the place. I have no reason to doubt that they are OEM.

 

If they are counterfeit they will still probably work well, IMO the OEM's are so overly priced that a good shock could be made for alot cheaper. The air ride and shock dampening system may be the most expensive system on the planet. I see replacement air bag systems for Range Rovers half the price of ours. I have a rear coil spring set up designed for the 4runner going in soon. I also want to swap the rear shocks for the bilstein 5100's for a quarter of the OEM price. Keep it simple, since I don't tow and the most weight I have in the back if my truck is a hockey bag and a couple of kids.