Animal Crossing: City Folk Question... Please help mee, and I'll give you a great reward! Thankss :))?

Okk, so my friend at school got this "hacked" item. its called a BlueLightSabreV1. And, when u sell it, its worth 1,750,000. but thats too many money bags to carry. so how do i sell it? i was thinking the auction room in the city but idkk. if u helpp me, ill duplicate the item, and get u one too. THANKS. :)