There is very few ways to make moneys most involve bossing, but however for lower levels not able to boss the thing they receive for doing the skill such as woodcutting should have a price. Magic logs in the shop are only 160 coins which is very little profit for the time it takes. Cutting magic logs should be worth the time not just for the 99. Such as mining take the ores out of the shops and make them only available if sold to the store. on the other hand bars, bars should be placed in a skilling shop for easy and efficient smithing. Make the ores you take your time to mine have value as well make all skilling not just a waste of time but good money as well. same for rocktails selling for very cheap and its time consuming.
Just a thought - Marazon