Thank you. Your post sent me down a research rabbit hole, such as medieval "towns" being defined by the right to host a flea market for surrounding villages, and historic gazebos called "market crosses" that serve as information booths, and a 10th Anniversary Stadium that doubled as a market square in post-communist Warsaw, Poland, and some open-air market promoters (such as YLNI in Fort Wayne, Indiana) seeking to distance their producers' markets from the sort of flea markets that attract non-professional vendors, and some professional vendors operating on a touring basis at a different market each weekend, and asking people from parts of Europe how much it typically costs to set up a table at a flea market.
Takeaways:
- Like the chips in Japanese stored value cards, European payment cards' chips allow small transactions to be authorized offline and batch-captured hours later.
- Flea markets largely replace garage sales in much of mainland Europe, and the promoter may be providing electronic payment service.
- Now I understand the third act of James Halliwell-Phillipps's short story "The Three Little Pigs", where the wolf meets the pig at an outdoor market, slightly better.