I took the trimmings from the end of the flat and made a simple Texas style chili in the Instant Pot for lunch yesterday. It was really delicious and the meat was super tender after only 35 min of cooking.
I've been buying prime briskets at Sam's since ours started selling them last year. Gotten the best results I ever had. Last time I got one a few weeks ago it was $3.04/.lb. Recently it was under $3 but the cooler was empty. When I was competing a few years ago I was paying $3.85 for choice at Wal-Mart.
BTW, the prime grade strips and rib eyes at Sam's are worth every penny.