Bundles are packages of multiple Turbo Ads, Featured Ads or Reposts. They are sold at a discount when compared to buying each individually. They can be bought 1 time at a discount and used whenever the need arises.
They help user facilitate Payments also. Pay 1 time instead of many.
Bundles are sold at a discounted price when compared to individual packages. For example, you can have a bundle of 5 Turbo ads bought at 1 time via 1 payment action at a discount of 25%. Using bundles is very easy when compared to paying for each service individually.