Lidl have got these arc welders instore from next Monday (26/05/14) for £39.99 which seems really good value imo. 3 year warranty included.
Product Information :-
Powerful and compact with adjustable operating current from (A): 40 - 80
2m welding cable with holder for electrodes Ø size (mm): 1.6 - 2.5
With overload protecting thermal monitor with indicator light and 2m earthing cable with strong clamp
Welding shield & chipping hammer with wire brush included
3 year manufacturer's warranty