What's a day of your time worth?

Open trailer, pull out & take photos, :30 or an hour. Web listings, :20. Canned email response with photos, copy of last inspection signoff, :10. They have to be serious before I'll drag it out repeatedly. I can figure that out based on questions. Collect notarized authorization of estate signatories, death certificate, bill of sale and registration application and be the escrow officer.... receive phone verified cashier's check, complete docs and hand over logs and keys. The actual transaction takes maybe :30 including the call to the issuing bank.

If it is something that will sell easily, you're off the hook early. Show them comps from other ads.

Sometimes the executor only feels comfortable if they pay something. You could ask them to make it a donation to his club . . .
I've done it for several estates.

Cindy