Are r tech inverter migs the same as the cheap nx mig welders on eBay?
http://www.ebay.co.uk/itm/INVERTER-...215701?hash=item48896c3655:g:rMkAAOSwo6lWG1uf
http://www.ebay.co.uk/itm/MIG-Welde...232374?hash=item2c8e233276:g:KVoAAOSwI-BWQ5-U
http://www.ebay.co.uk/itm/INVERTER-...215701?hash=item48896c3655:g:rMkAAOSwo6lWG1uf
http://www.ebay.co.uk/itm/MIG-Welde...232374?hash=item2c8e233276:g:KVoAAOSwI-BWQ5-U