to purchase theme on themeforest, do only one time or monthly pay

Hi Everyone

I want to buy a Shopify theme in ThemeForest.
But i don’t understand what is regular and extended license?
It also a payment, just one time or monthly payment?

Please give me an explaination and solutions, thanks.

Its one time payment.

that means if I bought one of the theme, I get it forever and without a monthly fee? and what is the difference between the regular and extended license? Please give a little explanation, thanks.

Yes you are right you get the item forever without any extra charges. For more about the license you can find here:

Worth mentioning that Shopify is a premium service that you will need to pay for on a regular basis (but this has nothing to do with envato)