I doubt there will be a lot there. Most don't open the SP20 as it loses warranty if you do. Chances are you would have been better off contacting ebay/mail over it being damaged in shipping.
Did they ship it in original box? The original box does a good job of protecting the miner.
Nope, just a used box with a few wraps of thin wrapping paper. Shipped US Mail Parcel Pool with no insurance. Just finished new thermal paste on the loose heat sinks and melted some 3M hot glue over the original. The only issue now is that it requires the micro-SD card to boot. Other than that it works great ! Next time ? Original box with insurance !