shared cPanel license means cracked license which is not genuine license. shared license is big risk for some users if they are using share license, on google there is 100 + shared license providers who offer shared license and provide cracked license of cpanel, litespeed etc. if you purchased shared license that means you are running cracked license on your cpanel and also which not makes your server secure at all.
Buy cPanel License Only From Official Website www.cPanel.net
Here is the list of shared license provider you should not buy the license from them.
there are many developers of these shared license system but mostly the websites you found on internet all resellers not the actual developer where actual developers are hidden. if you are using such license on your server that means any time your server can be hack, and you will lost all data and reputation from your clients.
do you need license in wholesale or cheaper price join cPanel partner program