Chopping Block Calculator

So we've just introduced our custom order calculator and I couldn't be more excited.  It greatly simplifies the ordering process for most customers.  Just click on countertops in the main menu, and browse from there.  As of now, it only applies to people picking up who do not need more services, like templating or what-have-you.  

I must admit, I'm proud of this addition as I've been working on it off and on for the past six months.  Well, this iteration of it.  Truthfully, I've probably been working on it for over a year.  Fortunately, my desire to tackle calculus meant revisiting Algebra and that helped form my thinking when creating this formula.  It's also taught me the importance of excel.  

Any customizations you have on smaller pieces can be made by adding it into the textbox upon purchase.  Check it out and please let me know if you have any problems.