| Clue | Source | Date |
|---|---|---|
| Free trade zones? | LA Times Daily | 22 Nov 2025 |
| Where some day traders trade? | LA Times Daily | 16 Dec 2022 |
| Organized bartering occasions | New York Times | 05 May 2015 |
| Organized bartering occasions | ||
| Bargain hunters' events | ||
| Organized bartering occasions |