Paying for Tiptoe:

Choose Tiptoe > Buy Tiptoe

Follow the instructions on the Tiptoe payment webpage.
Tiptoe is shareware. While Tiptoe is free to download and try for evaluation purposes, if you continue to use Tiptoe after fifteen days you must contribute to its development. Payment is accepted via PayPal.
Choose Tiptoe > Buy Tiptoe
Follow the instructions on the Tiptoe payment webpage.
The registration file should arrive within 15 minutes.
Choose Tiptoe > Registration
Drag and the registration file to the Registration pane and drop it on the file well, or click the "Browse…" button and locate the registration file and open it.
Store a copy of the registration file in a safe place, in case you ever need to use it again.
If you have already been using the Tiptoe demo before you receive the registration file, then opening the registration file will register Tiptoe.
Choose Tiptoe > Registration
If Tiptoe is registered the Registration pane shows a certificate with your name and email address.