There's no glitch with items selling for less than they are priced at - the price would have had to been set at that price for it to sell at that price. Maybe you accidentally put a comma in there?
**•̩̩͙✩•̩̩͙*˚♫ and the haters gonna hate hate hate hate hate ♫**•̩̩͙✩•̩̩͙*˚