license upgrade

HelloI wanted to buy a license but I have a doubt … I was wondering if you always update the version or you can go for example from version 4 to 6 by buying just the latest update … so without buying a new license at full price.
Thank you and congratulations for the excellent work.
I am sorry but I use google translator did not know English well

Hello Francesco,
If you have a PRO license, for example for version 6 and a completely new version comes out, you will only pay a small fee to upgrade to version 7 (and only if you want to). You would not pay a full price for the next version.
For exact pricing details you may contact our Sales department at sales@emclient.com

Regards,
Olivia