Can't say it bothers me greatly as I don't buy the current kit as I don't think they look that great when 'the model' gets past a certain age (got to say I was tempted a little by last years very impressive home kit though!) I do have a couple of retro 70s kits made with better quality material.
This is purely to get more money out of fans, many who will buy the kits regardless and the club will be contracted to wear each a certain amount of times no doubt. A couple of times this season we've worn change kits when there was no clash of colour anyway(Wolves and Luton away).
Nothing new this, as others have pointed out we had 4 kits at one point in the early 70s didn't we!