$80 sounds about right.
When the original kit (NCC-1701-A) was released, you could pre-order them for as low as $58 at some places but they became hard to find after a while.
$80 is probably about the best you'll get on them now.
I DID see these kits selling for $100 at a local hobby shop.
Such is the price people pay for a superior, pre-painted import kit.