Ugh! These are just glorified domain sitters disguised as a trendy start-up. Please don't give these people your money - they ruin innovation by taking up massive amounts of domains then selling them for huge amounts.
These people RUIN the internet.
That's not to say they won't sell some domains for more than $1000 because, they own premium domains, as well as LLL.com's NNN.com's etc but your generalisation that a .COM is worth $1000 is wrong.