I placed an order several days ago for a set of speedometer gear set 18-22 teeth but received a message from Amazon that my order has been cancelled. So I message Amazon who forwarded it to the seller, Greater Dimensions Engineering who replied that they don't ship to USPS, only thru UPS for an additional $15. I've been a Prime member forever and never had encounter a cancellation let alone an additional fee for shipping. So I checked ebay to buy the exact set and lo and behold the same seller has listing for the same price with free shipping. WHAT THE HEY!!??