My local grocery store sells choice brisket everyday for $3.99 and occasionally put some on sale for $2.99. and honestly I've started just using choice because I think it is better than prime. Prime tends to come out with the points still too fatty in the ones I've cooked, and I don't want to go through the hassle of making burnt ends out of that I just want to chop it up and eat it.
Got one almost done right now that I paid $3 a pound for yesterday. Costco prime was okay when it was 2.50 a pound but at 5.50 a pound they can keep their meat. The one I'm cooking right now was a 12 lb which is the smallest I've ever bought, but I also probably trimmed about a half a pound of fat off it only, I have trimmed 3-4 lb of fat off some big brisket before.... And at $5 a pound that kind of do make me mad