Did you yours done? My GTi estate recently cost me £490 for the welding + £50 for a pair of full sills. This include some floorpan repairs and reconstructing new inner sills plus fabricating and repairing the rear section behind the bumper. Excellent quality work and finished in black primer for me to complete the cosmetics.

Add on £20 for some red spray paint and £50 for a Waxoyl kit and another tenner for stainless self-tappers, drill bits etc. and it all just keeps adding up