I have a Jr. Member account which has only 30+ posts, but potential activity is 84 and so it may be Full Member in a month, would 0.02 BTC be a reasonable price?
it is very simple to give a real cost for an account based on activity , notice how activity is double in each rank? then just take hero, which is sold for 0.5 and divide by two every time
or for every 1 activity count 0.001 btc(based on current price of course, so it may not be true anymore if bitcoin skyrocket)
so hero 0.480, senior 0.24, full member 0.12 and so on
in your case, 0.084 would be about right, 0.02 is definitely too low, i would not sell it for that tiny amount, ever...especially with current btc price