4 Wheel Spacers Adapters 4x100 to 4x100 1 25" Thick 4 Lug | eBay

I see these are for sell on eBay for almost $100. The local shop here wants $300 for the same size wheel spacers. Is it cheaper on eBay because it might be "cheap eBay quality" or is it the same exact wheel spacers but the shop is charging 200% mark up?