I bought an old box full of used cast iron cookware from a mostly boarded up corner store that smelled weird. I had spent the day looking through yard sales trying to find some and we needed to buy a drink, it was the only shop for a while.
The door was open but the lights were off in the middle of the day, so it was really dark in there except from the glow of the drink fridge at the back. Really unsettling. There was an old lady at the counter but she didnt look up when we passed her. We went through to get to the drinks, the food on the shelves was dusty and looked like it had been there a while. Then crammed into the back corner was a small collection of second hand junk, including a box of cast iron cookware. Exactly what I had been looking for. $10 for the lot. Great deal. Paid the uninterested lady and got the hell out of there.
They got busted for distributing drugs and shut down not long after. Which answered pretty much all the questions I had about that experience in general.
I think if you found the shop magically disappeared the next day after selling only the things people were looking for, no matter how random, it would make more sense.
Maybe they only sold drugs because someone wanted some.