There is absolutely a run on ACS' inventory going on right now.
@BEC posted in the other forum that they are selling out of a bunch of stuff. I checked, and that includes popular motors. If you want something, probably best to get it now.
On the other hand, I looked on estesrockets.com at their motor prices, and after you apply the launch2023 coupon code, you're close enough to ACS' prices that I've decided to "keep my powder dry" so to speak for now. Maybe later in the year they'll have a stackable coupon and I can stock up at 40-off...