Wild Cooper is one of the two skins released in one part of the Agar.Stice offer. It could be purchased as part of an item deal in late December 2020.
Wild Cooper could be purchased for $4.99 in a limited time deal which included 8000 coins and an Epic Potion. This skin was not available for individual purchase and may not be available for purchase in the future.
Details of this offer can vary depending on location, platform or time.