If you are using multiple registrars for ordering and registering domains, then this module can save you a lot of money.
This module will compare domain pricing on all activated registrars and register domain on a reseller who provides you the lowest of the cost. For example you are using Enom and Resellerclub for domain registration. Enom registers the domain at $9 and Resellerclub at $10. The module will run in the backend, compare the prices and register on Enom because it registers at $9 saving you $1. Thus enabling you to save money on every domain registration. It will be mighty effective in cases where one of the registrar is offering discounts on the tlds your clients are going to order.
The module is very easy to use. All you has to do is to download and install the addon module. All the work will be done in the backend and you need not to worry about setting anything.
The module will also allow you to view reports of the domains registered and money saved against each domain :)