With the special Castrol LL VW 50700 Diesel recommended oil and Mann filter, it costs me $35-40 myself. If you are in warranty though, it may be best to dealer service because despite legislation, it is worlds easier if you need warranty work and can prove you had it done at a franchised VW dealer.
Cabin Air Filters aka the Pollen filter they tried to sell you is remedial classes easy to change in most cars. My MK6 JSW was maybe 5 minutes with no tools? Cost was $10ish dollars for a Charcoal filter too.