I usually order online because it is cheaper, easier, etc. Having said that, I have and will again buy from stores. A medical supply store that used to be near me actually had some decent brands, I would buy from them often.
One time I was on the road driving back home. I had brought what I thought was enough for the whole week (early days of incontinence) and I was nearly out. I used a google maps search to find a medical supply store and headed there hoping they'd have some good stuff. To my delight they did have some plastic backed briefs of decent quality. However, the store was set up really weird, so I actually had to ask the staff where adult diapers were. A young woman enthusiasically helped. She must have caught on that I was buying for myself because she immediately picked out the bulkiest ones in my exact size. I was wearing at the time and needed a change soon, so I was blushing during the whole discussion. She also kept using the word diaper which was surprising. I almost wondered if she was aware of the fetish and that men like myself had been in before.
I mean, she was very helpful. She described what made the brand so much better than Depends, etc. I've basically never had much use for Depends, sorry if you live that brand. This store was selling Tranquility which certainly are better than Depends. But these days I rarely go to a store unless I was out of town for more than a weekend. Even then I keep wondering if I can find an Amazon locker or something instead of a store. I don't mind the asking questions or the risk of being seen if it's in a olace where no one will recognize me. But it's unusual to find brands that are better than what I can get online. Something like Betterdry or Rearz hold so much more than basically anything I have seen in a store. I need the capacity too. I have a condition that makes me drink over a gallon of water every day even with treatment.
Oh, I also buy from places like Northshore or XP Medical for medical style. I think both of those are owned by users and/or caregivers. For ABDL brands, I like most stuff, so I get from Rearz, Bambino, or anywhere really.