If I purchase a Shopify Theme, is that a one off payment? and at any time I can replace it with another purchase theme?
Purchases on the Shopify theme store are one-time payments. You can buy as many themes as you want but you buy the license for 1 store. You can find more information here.
thanks for the information, i wanted to ask, if i purchase a theme does the theme owners take any commission from store sales?
and also i was trying to create a new question on this platform but can not remember how to do this.
The theme developer won't get any commissions from your store.