I was quoted about £1,100 for welding, in December, when my 2006 Jazz failed its MOT. I passed it on to the trader who sold me my Fabia. The car was subsequently repaired and is now back on the road. If you can get the welding done cheaply enough it is worth doing. The problem is, most garages don't do welding (not like the old days when every garage had someone who could weld) as with modern cars there is little call for it.