@CharizardOnABudget asks
friend offered to include my cards in their grading order. What should we agree on first?
Jeff answers
I'd write down exactly which cards are yours, the service, costs, shipping arrangements, coverage, and how updates and returns will be handled. Take photos and keep a copy of the agreement. Trust is helpful; clear records make it easier for a trusted person to do a good job.
— Jeff, infinitepulls.com