@Gladys
Open your inventory and mouse over the left part of the item in the list and you should see a trash can symbol, click this, but be careful you don't get rid of something you want. I bought a sword once and just when I was going to equip it I dumped it by mistake
 "Astrox"){kind=icon}
 "Roll-a-Ball"){kind=icon}
 "W-Zone"){kind=icon}
 "The Last Stand: Union City"){kind=icon}
thats where the demo ends, but not for very long.