$10 for a 2 tank trip.
If the DM is great, funny, helps me tick something off my bucket list, or totally saves my a**, then I usually thank them personally and let them know that the first $10 is for the crew, and whatever else is because of their service and they may do with it what they will.
If the DM is great, funny, helps me tick something off my bucket list, or totally saves my a**, then I usually thank them personally and let them know that the first $10 is for the crew, and whatever else is because of their service and they may do with it what they will.