Normal price of cPanel/WHM license for dedicated server is 25$ per month, while cPanel/WHM license for VPS is around 10$ per month.

So, what is difference in cPanel / WHM for dedicated server and cPanel / WHM for VPS??

Don't be confused that VPS cPanel/WHM lacks few functionality.

Both cPanel for VPS and dedicated server are functionally identical. VPS cPanel/WHM name is VPS Optimized and name of cPanel/WHM for dedicated server is Accelerated.

The only difference is that VPS Optimized is optimized for virtual environments.