Of course it is illegal here. We don't tolerate account buying here. Although you can find a lot of members selling it here: https://bitcointalk.org/index.php?board=234.0.

But once your account has been found to be bought, you will be tag by DT members automatically. So your account will be useless now and you just waste your precious bitcoin. So if you are thinking of getting one, I suggest you don't and used the route what most of us here have been doing in years. Posting months after months, and most importantly learning while earning. Don't hurry, in due time your account will rank up and you wouldn't notice that you already a Full Member -> Senior Member. Goodluck in your journey.