Economy like Uncharted Waters - Possible?

Nice work again Bluecube,both ways worked fine for me.The cms looks terrible but what the hell it can be fixed.I will probably post the demo I made with the two systems when I fix the cms.

---New question---
Is it possible to use numbers with decimal values in rpgmaker2003?
ie.(100x1.13)
This would be an example of a tax command for the economy.
So as price can also be controlled by separate tax rates.
The 100 represents the value of the variable which is hte price of the items you bought.