An alternative to a “product” based solution to ask the vendor to price the solution based on the resources required to meet the Service Level Agreements that you require. Often this is difficult because the vendor will tell the customer that they do not know how many resources are required to perform certain tasks because their resources are “leveraged”. If the vendor cannot or will not create a resource based model then you can use the Outsourcing Pricing Models on the Consulting Cloud Website to estimate what the price of the service from the vendor should be. The Outsourcing Pricing Models on the site will require you to estimates the number of resources (can be decimal points of resources) that you will need. You will also be asked what additional costs might be involved. These costs include software licensing, network costs, infrastructure etc.
The Outsourcing Pricing Models available on the site have all been used by several large IT Outsourcing Organizations.