Coool! That first one looks like a little tree that you would find on an island xD Ohhh, I love Echeverias they are just so pretty. I saw some neat ones at the local garden center, but I'm too cheap/poor to pay $6+ for them. The bigger the pot they come in the more expensive... they look too small to be in a big pot or I guess they are rarer.
Like your Gasteria pillansii it would cost $9, and other interesting mimcry plants that I do not have would be around $7-9. I don't know, I just noticed they were in the same sized pots as the more expensive one which are bigger maybe around 5".
But anyways, I think my next one I want to get are a Hens and Chicks and maybe Bear Paws or some other types of Echeveria or that Aeonium that you have, it is cool looking tree like xD