My local B&M does not sell tinned tobacco, Tre, but the house blends are from McClelland in nearby Kansas City so life is still pretty good. And just like 85royal wrote, the tinned tobacco is dessert. They will usually be pricier and consequently end up being a special treat.
Tins are fairly new to me and I've picked up a half dozen or so in the last five months. I'm a big fan of Dunhill's "Nightcap" and and really enjoy Samuel Gawith's "Squadron Leader." Both are popular smokes as is McClelland's "Frog Morton" series. Just be careful with your picks. Good B&Ms will have opened tins to sample and that's a great way to find something you'd like to have on hand. If you read about something that sounds good check out the reviews on tobaccoreviews.com or the Pipe Tobacco Reviews forum here. You'll never find a shortage of opinions and, if you end up with something you don't like, you'll always find somebody willing to take it off your hands.
The best thing about these forums is that everybody was a newbie once upon a time. And, like most hobbies, if you're sincere with your questions folks are willing to lend a hand, share some knowledge and make suggestions. (I'm making repairs now to estate pipes I never thought possible.)
I just thought of something. It might be fun to start a thread someday where we swap our favorite house blends.