I am thinking of buying BE Theme which has 500+ ready made websites themes. I need to create 5 different kind of websites. Do I need a regular licence or commercial one?
Each single license for each single domain.You can create 5 website in one domain but can’t do it different domain in that case you have to purchase 5 license(regular).
You will get extended license details here
as @unlockdesign mentioned you will need 5 license because each license will work for only one website. now will you need regular or extended license! normally you will need regular license for website but -
If the end users need to pay to see the end product, you need an Extended License. There can be more than one end user as long as there is only one end product.
Example: A website that requires money before you can access the content