BTW MTB was the question asked....
Depends on the newby's budget. Can't be arsed to fish the flyer out of the waste paper but this was an exceptional deal. Chances are they only have (probably had) one of each frame size to sell anyway. Buying a used MTB always carries a certain risk as you never know how hard the bike has been treated. Particularly if 2 or 3 obvious components have been recently replaced.