How I figured out these numbers was by taking the price of a item/ by the drop rate of the given item for all items on a bosses drop table.
For instance for zulrah I did:
10k (Pc of Tanzanite mutagen)/768 (drop rate of mutagen)= 13.02 (on average how much this drop will contribute to the $ per kill)
10k (magma mutagen)/768= 13.02
5k (bp)/256=19.53
5k (magic fang)/256=19.53
3k (serp)/256=19.53=11.72
200 (average number of d darts)/12=16.67
500 (fury)/10=50
75 (average number of pkp)/3= 37.5
62.5 (average pc of a drop of anti vemoms)/2= 31.25
43.5 ( average pc of a zulrah scale drop)/1=43.5
13.02+13.02+19.53+19.53+11.72+16.67+50+37.5+31.25+43.5= 255.79 (average $ per kill from zulrah)
Jad- *1/150 ***
3033
skotizo- *1/750 ***
3122
corp- *1/150 **
644.14
rev dragon-
257.71
zulrah- *1/1500 **
255.79
chaos ely- *1/1500 **
135.67
demonic gorilla-
128.87
kbd- *1/1500 **
79.42
bearded gorilla-
77.64
roat pkz monsters-
71.08
kraken- *1/1500 **
61.01
battle mages-
16.82
* means that this monster has a pet drop and the displayed dr is the drop rate of the boss
** means that spawn time should be considered when figuring out what's the best $ per hour
*** means that this boss is a world event and takes a extremely long time to spawn
**** means that this monster is in the wildy
side notes
1- these are averages and sometimes u will get lucky while other times you will get shafted.
2- I used all of the displayed prices and some of these may be inaccurate.
3- some of the 1/1 drops you cant sell to shops and rarely sell 2 players I INCLUDED these in the $ per kill.
4- you can get increased drop rate from donating or voting in which case you will get more then the displayed $ per kill
I would appreciate any feedback that you have and any idea for future guides you may want to be done.