I find myself asking the OSRS gold same question. Imo, slayer is no where near as good as it used to be (only looked what happened to the whips). Camping in abby demons for 75-125+ kills only to get a 900k-1.5mil drop?? Now to get a 3mil drop will be different. Slayer is a fun way to train melee stats if you anticipate doing coaching, do it. Its a wonderful way to split the repetativeness of training on a single creature. And the principal benefit in slayer doesnt come from the huge drops, its all the little ones adding up over time along with clues if you do them and if you are smart herb runs between jobs.
Well your right, I dont even possess 85 slayer. However, that doesnt mean that I dont know a thing or two about it. There has been accounts of not getting a whip drop in 4-6 hours of continuous slaying. Any help site you visit will list it as one.
The odds of obtaining a whip inside a 75-125 kill array is possible, not tipacal, but potential. You have more of a possibility of receiving it inside a 1-540 kill array. However, you might not get one. Furthermore, if you ask anyone why they Buy rs3 gold instruct slayer, its nearly always for the big drops. Ex: whips from abby deamons, sol from ice strykewyrms etc, etc..