20 Remix Crate Keys, delivered straight to your RemixMC account after checkout.
Buying the 20 key bundle works out around 35% cheaper than picking up keys one at a time.
The full reward pool is viewable in game, so you always know what you are opening. Head to the crate area at spawn and right click the Remix Crate to see every item, cosmetic and bonus it can drop before you use a single key.