I guess those pices of rock could be considered ultra premium, but it depends on who you ask? There is no standardized grading for live rock and super duper ultra premium fancy pancy live rock can simply be base rock with abit of coraline coverage, or a piece with a cave in it... as far as being large pieces, I think they are very average sized, when I get show size rock it is usually atleast 50+lbs each piece, some pieces are over 100lbs each. Those look like your average 7-15lb 5 pin bowling ball pieces. Also uncurred rock is not usually harvested from the ocean and sent to you, it is laid out on the beach and sprayed with high pressure water hoses to rinse it off and if you saw the stuff that they rinsed off you would cry. Not all rock is rinsed though, one type of rock that I get is called lagoon rock and it comes covered in stuff, it is also covered in mud and fine sand so its a pain to clean but it is beautiful when cleaned.