A mobile communication plan offering system and method described herein determines one or more best-fit mobile communication plan offers for mobile communication device ("MCD") users. Subscribers can also be referred to as "mobile subscribers" or "subscribers". The mobile communication plan offers typically consist of one or more modifications to a plan (also referred to as packs) or a complete plan including a base plan plus a pack and are based on a mobile usage pattern of a subscriber. In at least one embodiment, the mobile communication plan offering system and method analyzes MCD usage behavior of a subscriber, processes the usage behavior and current spending of the subscriber, and determines a mobile communication plan offering that, if adopted, will result in a positive economic benefit to the subscriber compared with the subscriber's current plan.