The iconic StatTrak!" M4A4 | Howl is possibly the most expensive CS:GO skin and certainly the rarest. It's a contraband skin (the only one of this rarity), which means that you can't get it by opening cases anymore. In fact, the only way to obtain the Howl is through trading it with other players on skin marketplaces.

At a whopping $400,000, a StatTrak Minimal Wear 661 AK-47 with four Titan Holos was sold. As a result, it is now the most costly single skin in CS:GO history. However, the stickers that were on this particular skin were mostly to blame for this cost.