Good question indeed!
It's a more complex question than you may know, and it certainly can only be answered correctly if the context of the question is more understood, but with the given information, I'll give it my best shot.
First, there are at least 2 different meanings for the term "value". There is the value of the actual investment in terms of resale (as you asked), and then the value that any prospective buyer could/would/will place on it.
Each year, a cost vs. value report is released and made available to Realtors and consumers alike. I took the liberty of doing some research and will attach a link to my site where you can see the cost vs. value for some remodels for the Boise area. I have to get permission to do so, so until then, you can just go to http://www.costvsvalue.com
and see the report for Boise.
In a nutshell, I'd say that you're not going to recoup anymore than 70-75% of the actual cost of the job. That's only a guess from what the report show from other projects.
That said, I think that while you may not see a return on your investment, you may see an increase in marketability and perceived value by prospects. On the other hand, some prospects may think you did a poor job or didn't choose good materials and specifications. It's risky, but if you're really good at what you do, peoples jaw will drop.
Good luck with your project and feel free to contact me for any specific questions regarding remodeling or resale questions!