| Clue | Source | Date |
|---|---|---|
| Without cash changing hands | Wall Street Journal | 16 Feb 2019 |
| Without cash changing hands | ||
| For services rendered instead of cash | LA Times Daily | 13 Feb 2017 |
| Without cash changing hands | ||
| By barter | ||
| By exchange | ||
| Even up | ||
| For goods or services only | ||
| For goods or services only | ||
| Without money changing hands | ||
| Without money changing hands | ||
| Stock___ | ||
| Without money changing hands | ||
| Stock ___ (resources) |