Porter Cable for sale over on Seatcupra.net
This looks like a decent buy, the complete kit from Autopia and the 110v already fitted.
I think you would probably be better going for the new G220 kit from polished bliss, the Advanced kit comes in at £169.95 and includes all the pads you will need to get started, plus its designed for the uk so no need to buy a 110v transformer to get started.
2007 A3 TDI 170 S Line
Sold - 2002 S3