The yearly license cost are free.

After clicking “Go to Donation page”, you’re free to donate.
In case you do not have Paypal, please contact me via license@rollower.com
I will send you the key(s) within one working day.
Check your spamfolder in case you did not receive an email within 1 day.

Select for which product you want a license.
Select your Garmin Edge
Fill in the Garmin Device ID. This can be found on your device in "Settings -> System -> About"