There are a number of factors to consider even at a high level when estimating the effort and/or cost of an implementation or upgrade. Which modules are you implementing? How many enhancements do you need to develop in regards to reports, integrations and interfaces, data conversions, and extensions to the e-Business suite? Will you require external help from consultants? Time and expenses of resources is one of the major (if not THE major) expense of an implementation or upgrade project. Hardware, hosting, infrastructure and licensing costs? How quickly do you want to deploy?
I’ve developed project plans and budgets for numerous projects - large global projects, and small single shops. In my opinion, you need to work with your team or client to finalize the scope of the project before you can get a reasonable handle on the effort and budget numbers. Do a proof of concept or a conference room pilot to help drive out requirements for the project.
Lastly, become familiar with Oracle’s AIM if you aren’t already. It will help you understand the process behind an implementation or an upgrade.
Regards,
Michael Siebert