Yes, the price is too good to be true. My experience is similar to the first reviewer (which I read AFTER the purchase). The lock nut slips and the bearing flies out. In addition, the quality of the cut to failure was poor, with a lot of tearing in the poplar. Unlike the first reviewer, my two pack contained two, both of which I sent back for credit. They have a brand name "LuSun" that even Google hasn't heard of. Time to spend real money on a famous brand. Sigh.