Hi Shelbourne.
1)
What is the cost for each new updates ? (I need to price it for my client)
You can update your membership any time with -50% discount price.
2)
a)
Does updates come very often ?
I can not say the exact time updates.
b)
bugs, securtiy risk etc ? Do I have to pay every time ?
When your Membership has expiries then you can see "
Expiries Memebers" topic in Forum and in this topic I write instruction for fixed bugs.
3)
Do I get an alert in the administration panel for the new update ?
Now , no have alert in Admin panel , but maybe in next version I write code for this.
And ... about update memebrship ...
You do not need to update the membership each time a new version.
Every time for new versions I write "What is new" in
Version History >>>
and if you need the new features then can be update Memebrship, if you do not need then do not need to be updated .