I've noticed the same - the ones on offer have been around for a while.
There are some deals out there though, depending on your budget. If I had the loot, the Churchill 470 on gunsinternational would be the boxlock of choice. Seems correctly priced compared to most of the other big bores.
Also agree on the 50BMG.
A semi-auto Barrett is surely a sound investment right now. That $10K will be $20K within two years IMO, allowing there is no ban on projectiles.
Lesson is: STOCK UP NOW!!