Appreciate the feedback. The parts you are referring to are Neuspeed items, not CTS Turbo which is in the banner.
Neuspeed intakes are CARB approved which due to the carb process and fees as well as being made in the US, prices are higher. Same with Neuspeed's exhausts.
Other manufacturers make items overseas which is how they bring the prices down. For reference the CTS Turbo intakes which are a full hard pipe back to the turbo is $280.49
https://www.moddedeuros.com/products/cts-turbo-air-intake-system-mk5-mk6-tsi-motor-cts-it-200
And their catback is much cheaper as well