You can't buy these rewards. Earn them in the Desert Heat season in Tank64

A new season has started in Tank64. It is called Desert Heat and it runs until the end of July. The season is built around missions. Complete them, collect stars, and earn crystals along the way. Nine crystals in total across the season. Once you finish every seasonal mission, the grand prize opens up, three rewards at once. The Diamond container, the Speed paint, and the Sandstorm kill card. These rewards cannot be bought, the season is the only way to get them. At the end of the month the season closes, and the rewards leave with it. Finish the missions while Desert Heat is still in the game. Open Tank64 and head to the season screen.