No it wasn't derp... (lol)
Try looking at the facts before calling people out. That is the same content but that deal is via the Microsoft store. Amazon follow suite with the prices. So not a dupe.
That was posted for Xbox store not Amazon
Try searching next time as this was posted Yesterday: https://www.hotukdeals.com/deals/xbox-onewindows-10-forza-horizon-3-blizzard-mountain-418-xbox-store-3051639
Good price. Same price on MS store too: https://www.microsoft.com/en-gb/p/forza-horizon-3-blizzard-mountain/9nblggh42rl1#activetab=pivot:overviewtab