On my last day in the dump I had to return my motorbike to Pee Noy, had to pay for additional 4 days of bike rental as well as pay him for the driving he was doing to the airport and a tip. I gave him 180 baht a day x 4 for the bike = 720 baht, and 1000 baht for the driving and tip (about 400 baht for the driving and a 600 tip).