| Answer | Crossword Clue |
|---|---|
| IONS | They're not free of charge |
| ANIONS | They're not free of charge |
| IONS | They're never free of charge |
| NEUTRONS | They're always free of charge |
| TOLLROAD | It's not free of charge |
| ION | Something not free of charge |
| ION | It's not free of charge |
| IONS | They are not free of charge |
