You'd think that air runes would be relatively cheap since (1) runecrafters can make the maximum multiple of RuneScape gold atmosphere runes versus any other rune (increasing supply of air runes), (2) atmosphere running is rather popular (again increasing source of air runes), (3) most people would purchase an air personnel versus a water/fire/earth staff (decreasing demand for air runes). But atmosphere runes (22 gp) are higher priced than fire/mind/body runes. Why are water (37 gp) and earth runes (39 gp) relatively so much higher priced than fire/mind runes? Just wondering.
Some motives: Water runes are used for blitz/barrage that's very well known in p2p. Not many men and women craft them, and they are not a frequent drop from creatures. A lot of monsters drop fire runes in massive amounts. Head runes are comparatively useless. Also keep in mind that air runes are the runes that pop up from standard-spellbook charms the most frequently. Body runes are so inexpensive because they are near useless, except for inexpensive levelling.
I haven't played in like a year, but from memory, the fastest way to make money from combat in f2p is by simply amassing big bones, which gives you maybe 30k a hour? There aren't really any high-level NPCs to kill that give drops that are rewarding. Lesser demons could give maybe 10-15k an hour. Hence that the F2P participant would spend approximately 3 hours earning 100k from battle drops.
The P2P participant has a much larger collection of options. They could collect dragon bones out of green dragons and make maybe 100k an hour. Or they could join teams and hunt the KQ, KBD, GWD bosses etc and hope to get lucky with a drop value 1m+. I am sure there are hundreds and hundreds of new techniques to earn money as well using battle in p2p. In the time that it took the f2p participant to generate 100k, the p2p participant could likely make 300k.
One by one, slowly but surely, there'll be rares that will not acquire sold-transferred before a individual stops playing Runescape. (1) A person having a rare could reduce their password (rather than have recovery questions). (2) A individual with a rare may do something illegal in Runescape to receive their account banned (3) A occasional rare might be lost (highly unlikely given their worth nowadays that someone could be so careless, but it IS possible), (4) etc.. ) Nonetheless, it's guaranteed, since no fresh supplies of rs 2007 gold these discontinued items will ever be generated, that by attrition, there'll be no more rares.