You have absolutely no reason to feel stupid. When the players arrive check them using
http://mympxplayer.org/how-to-removi...ck-vt2400.html
or
http://teekobeach.com/howtoreformattheplayer.html
If they are hacks you can either contact the seller and ask for a full refund or if you paid with PayPal, file a claim for the item not being as described. Or you can chaulk it up to experience and do nothing but just live with the hacks.
If you leave a negative for hailitele he will leave a negative back and say "Very unreasonable buyer, with no response to email, not willing to communicate!!" even though its not the truth.
hailitele is one of the worse offenders for selling hacked players.