Its not Bansama that gives the quest. Its Imildu Woodstreak that gives quest and its Bansama will give you 2 stones for your chunk of taelosian rock. Someone has it reversed or they changed it. I just completed the quest and it was 100 or a little over 100 combiens for each task..I am trying to get my fletching up by collecting taelosian stones.
Will give statistics later on drops