core + auto (Auto Extension): terms relating to automobiles.

billingIncrement

Canonical URL: http://schema.org/billingIncrement

Thing > Property > billingIncrement

This property specifies the minimal quantity and rounding increment that will be the basis for the billing. The unit of measurement is specified by the unitCode property.

Usage: Between 10 and 100 domains
Values expected to be one of these types
Number
Used on these types
UnitPriceSpecification

Source

http://www.w3.org/wiki/WebSchemas/SchemaDotOrgSources#source_GoodRelationsTerms

Schema Version 3.4