New inlet horn is part of the kit ,but it connects to the stock intercooler ,so any aftermarket cooler designed as a replacement will also fit- If the conversion proves popular , then a different intake/cooler can be made but cost is going to be an issue with this and ultimately demand.
The bulk of the price is in the charger itself and they have increased in price 30% since I started the kit!!
Much like anything sales wise ,the more sold allows economy of scale and prices can be reduced but until then that is the best I can do .
If you consider the price of some
JCW seats,an aerokit and some split rim wheels- I know which I would get more enjoyment from !!