I would avoid that. Would you buy a helmet from Ebay? Not sure I would that. Just like any safety equipment you get what you pay for. My Hyperpro RSC steering damper cost 500, but my life is worth more than that. Before my damper I had a serious death wobble almost crash my bike. With the damper installed I can’t tell it’s there but the when I hit a big bump I have no shake. Totally worth the money. Be safe in 2 wheels and don’t compromise safety.