Since Vtiger 6.x release, you will buy extension with 1 Year support and updates (License is still not time-limited. You can use your license as long as you need).
After 1 year you will have 3 options:
- Renew license key within 90 days of expiration date, with 70% discount.
- You will use your license further, but some time later you decide that you need a renew. You can renew your license support and updates with 30% discount.
- Use your license key of PDF Maker further, but without updates and support.