it is rather peculiar, it looks like a price of a .308 BCG went up at least $100 since the last time i looked. holey moley.
Looks like $206 for nitride, in stock at OP. These have always been good to me.

Aero Precision .308 Winchester Bolt Carrier Group Includes Blazin' Deal w/ Free S&H — 2 models
Shop Aero Precision .308 Winchester Bolt Carrier Group | 4.3 Star Rating on 95 Reviews for Aero Precision .308 Winchester Bolt Carrier Group Blazin' Deal + Free Shipping over $49.
However usually there is a 5% off thing and you get 10% back from these guys after the fact. These BCGs were never $100, usually more like $150+... today $195 or $175 depending how you count. Isn't bad IMO..
Note: do not get a nickel boron version if you want a reduced diameter firing pin. Oddly Aero nickel boron BCGs are a different style, where the nitride is a .070 I want to say - an in between reduced size that's not the .075 of some or the .065 of others.