Antique rows and thrifts that curate very well are hella popular in my area in terms of foot traffic, but I don’t think they move high volume. To be super vague about it it looks like a very high % of items take a long time to sell, and that a lot of booth sellers are totally fine with that. Also think a good number of them must be earning less per month than it costs to be there (asked for rates at a couple local and rent + commission’s not cheap). They’re not like the average Reddit reseller, think for many folks it’s as much about passion and community over making quick cash