Wicked, remember they're canadian prices on ES's website... If you still find them expensive, consider the quality product you're getting - little things like there's an additional nipple on the Turbo -> IC pipe for rerouting the wastegate "vacuum" line allowing the BOV to be single sourced to the manifold. There's a bracket welded on for remounting the AC valve by the TB. Top quality silicon (I think - you'll have to ask him) couplers... He provides all the brackets for relocating the rad overflow - something that Injen doesn't even do (and they're one of the better ones!). It is TRUE bolt on... something most of the others are not. As well as that you're buying expertise and top quality workmanship... (I just put my hardpipes on Saturday at his shop so this is all from my own experience).
Cheers