No way is it overpriced - especially considering the amount of affordable used gear out there that's still in very workable condition.
PVC setups will be hardpressed to last a few months, much less years on end of constant work. I have a few DIY PVC pieces that might work and look 'okay' but they are merely backup if anything. Not only that, but I would never take anything PVC to a professional set unless I had absolutely no other choice... IE: something breaks, and you have to make a run to Lowe's, ACE, or Home Cheapo...