Are payments for Wordpress themes made at once? Or is it done once a year?
For example, the cost of a theme seems to be $ 69. Is it bought for $69 a single time or is it $69 every year?
One off payment although there may be local taxes/fees added to the $69
So I can use a wordpress theme without problems by paying 69 dollars at a time, right?
For one project per purchase yes.
Plus you get 6 months support and lifetime update as long as the item is still for sale