Why are gas fees for a sale higher than for a transfer?

Just new to NTF’s… Please help me understand.

https://www.youtube.com/results?search_query=Why+are+gas+fees+for+a+sale+higher+than+for+a+transfer%3F


Links to my Rarible and my Instagram and my Website

I always post my art to Insta first and then when I get the time for admin, I’ll add it to my website