If you watch a lot of TV/Video/YouTube etc. or download large files and only use the account in a few months out of the year then an Unlimited account is a great option.
With an Unlimited account you pre-pay a number of months and after that the account expires by itself.
You can always buy more months (anytime before or after it has expired), to ensure it doesn't expire or to re-activate it.
Unlimited data transfer
Upload or download as much as you like
Connect up to 10 devices simultaneously
Know exactly what you will be paying a month
Freely change between all VPN servers in all countries
3 Months Full Satisfaction Money Back Guarantee
Free native Android app included (100% Made in Denmark in-house)
Unlimited accounts expire after the amount of time you purchased has passed eg. a 1 month account expires after 1 month of purchase, regardless of how much you have used it.