sure but doesn't happen like that, yet we aren't really sure of the % but certainly isn't out of 1 item ea 10 kills otherwise these items weren't that valuable.
So if you could talk of items more prone to appear in a daily basis were amazing, like something that you could be sure that all the ppl who you went in with would have at least once, example tokens, Creature Products, uncommon items things that you could assure would appear on their bp 1 ea 30 days, if u want for example take into account a uncommon stuff lets say a EQ, u must be sure that such EQ would appear in your bp after few kills, like urmahlulu blister ring, which has a frequency of 30~ kills to appear, so you can certanily say that such item could be taken into account in a daily basis, giving from 3k to 5k~ extra more or less per day
Hope you could improve your answer and thank you~