Is the 10-50 lvl server deleted?

So i have seen many 50 lvl players, and they have lot a health, 10 000 - 12 000. what are they doing? are they normal players or hackers? or is it possible that they will use at a large amount of money for this game? And and when the level up you get only 20 more health, and if you don’t use the rea...