[centre]jr.member account = 0.002btc - 0.005btc
member account=0.01btc - 0.025btc
full member=0.06btc - 0.1btc
sr.member= 0.15btc - 0.3/0.4btc
hero member= 0.5btc - 0.8btc
legentry member=1btc - 2.5btc or more
These seem mostly accurate. I think the accounts going towards the lower end of your estimates only do so when the ownership of the account cannot be proven though. Accounts with good posts tend to fetch more towards the higher end still as well. I think people would probably get more for them if they didn't offer such low prices in the first place. Most seem to come straight out and ask for a price of 0.5 or whatever for a Hero but if everyone asked 0.8 from the get go they likely wouldn't get such lowball prices but people will snap them up at 0.4-0.5 and I guess most want a quick sale rather than waiting for a bigger one.
If you want to use the acc to signature campaigns, age matters a big 0.
If you want to use it to other things, it will probably matter.