Nope, legitimate only refers to Neopoints earned by methods in compliance with Neopets T&C. No cheating, botting, score sending etc and quite frankly, not have much use for clraik. Any one claiming to be selling several millions worth spends way to much of their life on Neo and would most likely be offended at a 2$/m offer.
What you will find around here is secured Neopoints, that being said, 80% of people still proceed to lie about for how long or even if it has been at all. Secured NP is 'safe' but it all depends on who your buying it froms interpretation of 'secured' is.