Filet is more expensive than hanger, and often better.

Dry-aged is more expensive than fresh, and always better.

Prime is more expensive than choice, and always better.

These things all matter. You're right, but I still want to stomp on the confusion about what "prime" means.

I heartily endorse Ruhlman's "too stupid to cook" chicken recipe. Buy two chickens when you do it, save the other for leftovers. Whole chicken is much more economical than breasts.