yup, pricing accounts by activity alone just won't cut it. so I made some rough calculation based on the prices I see in the market (I was very bored

)
this is the formula: {a} x 0.0005 x {r} x {p} + {t} =
{r}ank modifier:
Jr. Member: 0.1
Member: 0.5
Full Member: 1.0
Sr. Member: 1.4
Hero Member: 2.0
Legendary: 10.0
{p}ost quality modifier:
bad: 0.8
normal: 1.0
good: 1.1
add 0.01
BTC for every {t}: -x / +x points. (still needs some work on this one).
so this will make a good quality poster full member account with 150 activity and neutral trust worth 0.0825
BTC.
or make a bad quality poster Sr. Member account with 300 activity and 5: -x / +x trust worth {300 x 0.0005 x 1.4 x 0.8 + 0.05 = 0.21800
BTC}
man, I'm awesomeGreat job, however there're still some bug on it, like if a Jr. have 56 activity, no pos/neg trust and with normal post quality then it will worth just 0.0028 BTC, which it's market price is at around 0.005-0.01 BTC. So maybe changing the modifier of Jr. to 0.25 is better?
And a 10x modifier for Legendary is too high, as this means an average Legendary with no trust and normal post quality and the minimum required activity (775) will worth 3.825 BTC at your current modifier. They worth 1-2 BTC at the moment, so a modifier at 3.5-5 will be more good for this.