I would appreciate some feedback regarding spool guns for MiG welding machines. Normally they seem to cost around £400. I have now seen two different sellers offering spool guns on eBay at around £50 a piece. My immediate thoughts were "I bet they are good quality.... NOT!" But I've been wondering if they are that bad how are they still offering them for sale? I will need to do a small amount of aluminium work probably next Summer (2016) and will admit that I am tempted into getting one of these things. Does anybody have any real experience of these cheaper end of the market spool guns? I cannot imagine they would be of any use in a production environment but maybe a light usage DIY one? I have to be honest and say that rather than spend £400 for one I'd sooner get a cheap TiG set up for ally.