The concept is new to me and i am not sure i understand how this all works.
I wanted to add a background image to my rather dull profile page and found out that i actually had to pay for that ??
The free ones returned an error and i know €0.03 is not much i'd rather create one myself than buying one to be completely honest.

After that i saw you can sell your props and other items, also confusing.

I wonder if i can make something and sell it or share it free on the marketplace ?