The Hyperadobe bags are UV coated, so you have WAY longer to build your house. The other sand bags fall apart in less than 1 year in the hot desert sun. Lots of people I talk with really regret using the little sand bags.

I did watch a lot of tiny shiny home, but they do leave out a lot and their videos are just too long and too many to keep up. They also have workshops in person but they charge so much to go there.