This looks like the modern version of car-part.com, the difference being that partcycle.com lets you order the parts online. car-part.com only helped you locate stock, then you were on your own to contact the the salvage yard and go pick the part up.
In my case I'm looking for a bluetooth/USB module, which is selling for $100 on eBay. I found it on partcycle for $50 and ordered it.
Day1: Ordered part against credit card
Day2: Received cancelled order notification - something about them not matching their description to the part. I asked the salvage seller to go strictly by part number and ship anyway, but no response. Contacted partcyle.com and received a response same day. They did a search and found me 3 more of the same part, but best price of $88. I searched though other vehicles and found an equivalent part number for $78.
Day3: Order confirmation of 2nd part number. Received a phone call from the salvage yard in KY confirming it was the right part. Received shipment notification.
Day5: Part arrives