Thelowlandpiper wrote: I have a 1 site <500 user license; I have two new clients, one of whom requires a similar license; fine, I can upgrade; the other however, requires more users perhaps 2500. How can I arrange the most economical license upgrade?
Just purchase the license that has a user count greater than your current number of rows in your Joomla jos_users table. You (or your client) can upgrade at any time in the future (when needed) just by paying the difference.
Suggest that you create a new account to purchase new CBSubs license in order to hand over account to client afterwards (so client is responsible for upgrade of license, maintenance period, etc.).
nant