well there were only 10 of the SL91 models made that retailed at 7000. they were the geo 2 before it came out with better milling. the CSL is another SL model based off the EGO 11 that retailed at 1800. every year they come out with a new SL model of either the EGO or GEO.
Nope, while it is true that only 10 were made it is not true that each costs 7000. Of the 10 only two were sold to the public at around that price. But truly each SL91 is priceless as each one has a one of a kind anno. I personally like Uziel's subzero.