CashBox Portal User Guide
CashBox for Salesforce
Rate Plans allow you to create pricing structures which vary by the number of items purchased. They allow you to define pricing Tiers, which define one price for the first number of a given Product, and a different price for subsequent blocks of the same Product. Rate Plans also allow you to define an included number of items, at no additional charge, and set minimum and maximum Billing Cycle charge limits, if you like.
For example, a Rate Plan may be designed such that each Billing Cycle allows access to 50 GB of storage for $12 per month. The first 100 GB after the initial 50 are billed at $.20/GB per month; the next 100 are billed at $.15/GB per month; and anything over 200 GB is billed at $.10/GB per month.
With Rate Plans, Product pricing varies by the number of items used; whereas the price per Product, no matter the number of items used, is stable in a flat pricing system.