Need a product evaluation script setup:
If there are easier ones than this, please let me know
When the bot is run for the first time, it generates a unique product Code (something like ACEDABD5-2CA5-47C5-83C7-E8F698E65162).
After the user has evaluated the bot and wants to buy it, he'll go to the site and click on the paypal link. Well on that page where he purchases it, he should enter that Product Code, and a file with that name will be automatically created on the server.
Then, whenever the bot is launched, it will check if the file containing the product code exists (eg. [url removed, login to view])
If it does exist, that copy is registered. If it doesn't, then the demo continues (or if it has expired, the program exits).