Tier ID—Name of the Tier. Defaults to Tier 1, Tier 2, and so on.
Starts at Unit—The first number of Units for which the price for this Tier in the Rate Plan will be applied. This number is calculated by adding the previous Tier’s Ends at Unit Level, and a single unit as defined by the Tier Levels have value.Ends at Unit—
Rate Price—The last number of units for which the price for this Tier in the Rate Plan will be applied.