Purchasing by the case is the most standard way to buy in bulk for personal or event use.
Listed 1.75L bottles of Smirnoff Premium No. 21 for approximately $11.89. smirnoff bulk buy
If you are looking for ready-to-drink options rather than standard vodka, bulk variety packs are available: Purchasing by the case is the most standard
Stores like Applejack Wine & Spirits allow you to easily "Add a Case of 12" to your cart, though they may have restrictions on shipping spirits depending on your location. smirnoff bulk buy