The legendary rank was introduced only quite recently and there really aren't enough of them being sold to get an clear idea of what a fair price for one might be. However, there shouldn't really be a big difference between hero accounts and legendary accounts since their sigs are exactly the same and no campaign that I'm aware of pays legendary accounts at a higher rate. The only reason I can think of is prestige since there aren't that many legendary members yet and the fact that legendary members spent much more time on their accounts so they might be less inclined to sell their account at a cheaper price.
I am not sure why there would be such a price diffe between hero and legendary accts
because not everyone got legendary ran after being hero i see here some hero members with over 900 activity which is 3 years of activity and still not lagundary
Someone who has over 900 activity should be very close to becoming a legendary member:
Legendary:
Activity: the Legendary membergroup has no universal activity requirement. You are guaranteed to become Legendary somewhere between 775 and 1030 activity, but the exact point in this range at which you become Legendary is random per user.
And yeah, the legendary rank is a bit of a special one. Not sure why theymos decided to make it like that.
I once bought a Hero account for 0.1BTC(almost a month ago). Later on I sold it for much higher price. So,there is no fixed price of any account and the price can vary substantially based on the kind of seller you get. You cannot even determine the average lf the price of the Hero/Legendary accounts. I don't know about pricing of Legendary account but, you can get a Hero account in the price range of 0.1BTC to 1.5BTC
0.1 BTC is less than $30. It takes almost a year and a half to become a hero member so $30 would be way too cheap. Even the cheapest full member accounts go for more than that. While it seems that you got a very good deal, it's definitely not what I'd consider normal.