$550 is high, but $365 bitmain price does NOT exist, so stop quoting it.
Explanation:
1. You have to add $40-50 for shipping, bringing the price to $405-415.
2. You'll have to add 20% VAT for Europe (where he is at), making the ACTUAL new S7 price in Europe $486-498
That said, you CAN get S7 on ebay for, maybe, $350 or about (without PSU and BEFORE shipping)
Thats true; sorry forgot to consider those