@TwoLanguageTrainer asks
a collector spent time explaining stuff and wouldn't take anything. What's a good way to thank them?
Jeff answers
I'd tell them specifically what their help made clearer. You can share how the collection is going or pass the same patience on to another beginner. If you want to give a small token, keep it comfortable and pressure-free. Helpful people often appreciate knowing the conversation actually helped.
— Jeff, infinitepulls.com