I will use the $140 for my coming trip to Thai, not sure how, maybe as donation money or to help pay for transportation costs to and from the dump. Every day I go to and from the dump it costs around $15. So $140 would pay for 10 dump visits, there and back from Mae Sot town.
Update* The workshop went very well. Vern is a more advanced photographer but he still learned plenty of things and said he was very happy he did the 7 hour ride to and from Calgary to spend 4 hours with me talking view camera photography. I earned 140 dollars which should pay for all transportation to and from the Mae Sot dump. Wins all round! A good day.