I've noticed GSF parts prices are higher than many other motor factors I buy from. The weekend offers ... 35% or 40% discount ... simply brings the prices down to similar to other factors. Biggest influence on my purchase of motor parts is that I am looking for parts of exactly the same OEM quality as I would buy from motor manufacturers main agents. Fitting cheap low quality parts that either don't fit correctly , are a poor fit or are missing features / fittings on the original removed parts, or need that replacement again in a short space of time don't assist me at all. Examples, two headlamp units, (VW POLO 1.4 Match) one missing fitting for beam adjustment motor, other with insufficient adjustment to pass MOT test. Vehicle Battery, (VW T4) Old stock, Poor starting performance now at 18 mnths service. Suspension swivel joints (VW T4) perished rubber boots at 12 months service, joints failed MOT.