Anyone here bought a miner from eBay?

What should I look for?

I'm looking at this seller: http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback2&userid=joobartoloo

Feeback is good and replied fast to all my questions.

Currently has 7 miners for auction and I can pickup the miner in France and pay with btc.

Do you think it's a good deal? What should I be careful with?

Example:

http://www.ebay.com/itm/7th-Antminer-S9-batch-17-13-TH-s-w-PSU-APW3-1600-W-/201878472514?hash=item2f00e50742:g:LAkAAOSwol5Y4ZpD

http://www.ebay.com/itm/6th-Antminer-S9-batch-17-13-TH-s-w-PSU-APW3-1600-W-WW-/201878473498?hash=item2f00e50b1a:g:LAkAAOSwol5Y4ZpD

http://www.ebay.com/itm/Antminer-S9-batch-17-13-TH-s-w-PSU-APW3-1600-W-WW-/201878474428?hash=item2f00e50ebc:g:LAkAAOSwol5Y4ZpD