Same range.....
Web Order - Have tried a few. Pricey and just like Amazon a little risk. Not bad meat but have had a shipping challenge (e.g. family meal ordered for delivery on Friday with dinner Sat night - one day cushion - showed up Monday). Size issues as posted already (had one issue where we got 4 steaks and they were 22 oz for 3 and 12 oz for one... Also have had a couple challenges where after the order i get an email they didn't have what i ordered but wanted to change out.
Costco - yes... they have had challenges like every meat retailer that doesn't raise their own (where above works better - Snake River, Wild Fork, etc.). Nonetheless, Costco is solid. I NEVER have a situations where i can't get something there. I might plan on a Tomahawks for a party and get there and they are out, but they always have something i am just excited to do (e.g 2 inch thick filets i can bacon wrap).
For the best quality - custom cut, etc. We have Italian Markets here in Michigan. Papa Joes, Nino Salvaggios, etc. They all have really good butchers! Nino's is my stock up place. I will go there 3-4 times a year and drop $1k on meat... steaks, pork cuts, briskets, butts, etc.
Probably more important... I NEVER buy meat I plan to cook on my 700 and/or BGE from Kroger, Meijer, etc. Any meat purchased there is gasser meat. Occasionally cheap steaks, pork chops, etc. Chicken is ok. But i just find their choice meat to be super bland. Hard to cook actually (thin), etc.
One other note... Prime is Prime. I live in a place where i can get to farm raised quarters/halves, etc. and got overly excited with a price and description of pure "Angus" and other words. It wasnt rated. I kind of assumed it would be choice. Big mistake. It was freezer meat. Stew meat. Burger. The steaks were terrible. (you get what you pay for). I would say it was select or below and the marbling was actually not fat. It was so bad. Hard to cook something and then watch your kids chew on it for 10 seconds only to go to the trash can to spit out meat they couldn't swallow. I am NOT against the area farmers... quite the opposite... big fan. But, focus on what they are selling. Good learning experience for me.