here's what ive come up with for f2p 1. 31 prayer gives the +15% str bonus 31 prayer lvls = 3.875 combat lvls each str lvl = 0.325 combat lvls 3.875/0.325 = 11.923 this basically says that 31 prayer levels are equal to 11.9 str levels, so when we get a bigger bonus that 11.9 from our +15% str prayer, thats the moment prayer becomes worth it (strictly speaking str-wise) so 11.9/0.15 = 79.48 str. basically the level when you should consider getting prayer is level 80 strength. 2. 44 prayer gives the +15% range bonus 44 prayeer lvls = 5.5 combat lvls each range lvl = 0.487 combat lvls (i cant get an exact number here for this) 5.5/.487 = 11.29 11.29/0.15 = 75.3 Basically 44 prayer becomes worth it when you get 76 range. 3. you have to consider that prayer doesnt last forever, that it runs out. I dont know how to factor this in, but i'd imagine that it de-values prayer. Also, protect item adds value to getting prayer, despite its morality issues. Questions, Comments, Feedback, etc, all greatly appreciated.