If i have a Nixon Newton Watch i got online can i return it to a store for cash?

i got a newton Nixon watch i got free off lockerz.com but i want the money i tried selling it on ebay but no luck. i was wondering since it has the tag with the bar code on it and the box with the bar code on it could i just return it to a store witch sells this watch and say i dint want it and they will return it and give me 100 bucks cash?