trip to doi inthanon national park and highest mountain in thailand:
travel agencies organize tours for more than 1000thb pp, possible to negotiate to 900 but if youre a group of few people also possible to do it on your own for about half of this price
tuk tuk from center to north bus station - 80thb
bus - 35thb pp
from there you need to rent a car for 1500thb (the price is fixed so you can wait and try to gather a bigger group) that will take you to the top (its cold there), to the two pagodas, hmong market and 2 waterfalls (its possible to swim in one of them), separately you need to pay the entrance fee to the national park 200thb pp and to the pagodas 40thb