if i brought a dud one id take it backThe OP first asked about refurb places then where he could get the bits to do it himself. You cannot buy the bits to do a proper refurb yourself for £100.00. But you can get a totally rebuilt unit for around £100.00. On an automatic you need a reliable starter motor. If you want to trust one from a scrappy that is up to you. When you run it up how do you know the bendix clutch is not knackered? With the refurb you get a starter that may last ten years, that's a tenner a year. For a tenner you may get one that lasts ten minutes or that runs connected to a battery but when fitted won't turn the engine. Matter of preference i suppose.