The present invention provides apparatus, systems and methods that apply to a single particular billing method selected by each of a plurality of users, in response to each particular user's request, a set of billing method rules for each carrier of a plurality of carriers and determines whether or not...http://www.google.com.au/patents/US7117170?utm_source=gb-gplus-sharePatent US7117170 - Apparatus, systems and methods for applying billing options for multiple carriers for online, multi-carrier, multi-service parcel shipping management
