Mike,
I just picked up an older BT-99 in "unfired" condition made in 1983 ( PX ) It has a high comb stock and has invector chokes. I picked it up for $925.00
Good luck, there seems to be a lot of the older style BT's showing up. I just found another one near me in a local shop for $779.00 & its near mint with very little use.
Good luck,
CW