Price for rarity Bots?

hey yall, just made my first ever rarity support character since game release and i heard that these builds can be payed to follow someone through maps/temple and get some of the drops in exchange.

So i was wondering how much i should ask for when joining people. ive ran one temple with a random guy and he said he dropped 130≈ div while with normal leechers he gets about 100d≈ whats your experience and is a 30% increase in drops accurate?

thanks in advance for any Feedback ^^