eBay:
http://www.ebay.co.uk/itm/6x-GPU-mining-rig-550W-only-Ethereum-ETH-Dash-Monero-XMR-Zcash-ZEC/332386254328While eBay prohibits putting phone number, here is mine: 0044 758 629 4279 (Signal, WhatsApp, Telegram, iMessage)
It is working fine, just the electricity cost is too high that leaves very little room for profit.
Happy to answer all your questions etc...
Ideally collection in person - it's rather heavy, bulky and fragile - don't want to send it via post like that, collection is person is much more sensible if you know what I mean.