What do you think about this deal on ebay?

http://www.ebay.com/itm/BITMAIN-ASIC-Antminer-S9-Batch-1-16nm-14-TH-s-0-1-J-GHs-Free-Shipping-/291859832284?hash=item43f4339ddc:g:DicAAOSwnFZXWt78&autorefresh=true


Please note that I'm not asking opinions about trusting this guy because I'll definitely not trust. I'll be in China next week anyway and I already arranged a meeting to see the miners in Guangzhou before I send any payment. The seller didn't raise any objection to it and he was actually very friendly and open to the idea.

So considering the seller is legit is it a good deal?

4 used s9's for 8 btc? 2 btc per miner or even lower if I negotiate a larger order. For 4 packs of 4 the last quote he gave me was 30 btc.

I don't mine for a long time due to electricity cost in my country so I don't even know what to look for but I'll meet a chinese friend there that will be my partner if I choose to proceed with this.

My friend will see the miners with me and if we buy them he'll setup the miners and run them in China.

The thing is I'll have to pay the most of this 30+ btc because he hasn't much spare capital. I'll be the one exposed to the most risk if the miners fail or don't ROI or...

What's your advice? I know there's always a risk involved and I accept that. But looking at the whole picture what does your gut tell you?