The Sentry Box in Calgary has a six-foot high section of wall with many BattleTech minis. I'd grab a picture if it was open , but it's still purchase online/pick up at front door.
Um... no, it isn't. They have their hours posted on their website, in fact just recently expanded the hours on a couple days from their prior reopened noon to 6 pm to noon to 8 on Fridays, 11 am to 6 pm on Saturday and Sunday, with Monday through Thursday still being noon to 6 pm, and have been allowing people inside for almost five months, having posted on their facebook page back on May 19th that they were opening for the first day after the shutdown.
All that said, they do require mask wearing, as do all Calgary businesses. The online or phone ordering with curbside pick ups are definitely an option for those unable to wear a mask. I'm not certain about their policy on face shields instead of masks, you'd want to contact them to ask.
As for Battletech though, sadly the amount of minis in blisters is waning, with less than a hundred for sure. Last time I was in they did have both the starter box and AGOAC, plus a decent amount of the game books. On the plus side they have been getting in all of the recently printed fiction books.
On a related note there is still a pretty good amount of the plastic CAV minis adjacent to the Battletech stuff, for those of us that like to mod or proxy Nightshades as Mad II's.