Yep! That is not at all a bad price for a transferable hk in the USA. Not since 86 have they been allowed any more full auto for pricate ownership.. As more people want into the interest, the prices have gone up. As it is a reg sear, you should be able to take the trigger pack and put it into any other HK and still have a legal full auto gun.. You should see the prices for an M-16...
At least some 25 year old in the USA, can get a full auto gun if he is a good guy! Here If you are a saint you cannot get into any of the collcector status's. Not ca, not full, not sbHand gun, nothing!