I know a lot of domainers (who own thousands of domain names) and all of them will sell a .COM for less than $1000, just because its a .COM doesn't mean its instantly worth at least $1000.

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.