I was off of work today for a Dr appointment and stopped by an Academy Sports on the way. No ammo with the guns so I got a couple of fishing lures and went to check out. Low and behold there is a rack at the check out counter with all kinds of 6.5 and 300 PRC ammo. Match and Precision Hunter varieties along with 9mm and 22's. Bought 2 boxes of 6.5 Precision Hunter for $44 a box.
Sign up for a free membership at ammoseek and set an email notification. I've routinely seen it pop up places for around $60 a box for both ELD-X and ELD-M. It usually goes pretty quick, but I probably get a couple notifications a week.