Lets say you are a full time graphic designer and Xara is one
of your main tools. And let's assume you make $40.000 per year.
You paid for Xara PRO $199.
--- thats 0.49% per year of your income - less than 1 percent! ---

CS2 full version including 5 Applications (AI PSD PDF INDD GOLIVE)
is about $1750,
--- that's 4.37% of your income, about 0,87% per application---

Overview:
0.49% of your income for XaraPro
4.37% of your income for Adobe CS2

(taken from another thread)