That would depend on whether you are a Communist or a Capitalist.

I'm a Capitalist. Charge around $350.00/hour....for consultation.

Let's see....single PHP script....self contained....supporting Mysql tables
(yes all the tables....not just the teasers as others have provided)

What's it worth to you after a couple of weeks of my time?

I'd provide it....(encrypted naturally with a MAC address
verification setup on a per machine basis).