Opinions on cheap mig welders

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I'm thinking of getting a cheap Mig welder for little bits n bobs like exhausts and stuff. I've had experience at college with welders, that was a very expensive one mind.
I'm not planning on spending a lot really. Found this-

http://www.ebay.co.uk/itm/370656727258?s...1423.l2649

Does anyone think it will be any good? I know it's not going to be amazing but it's all I can afford really.