The Summer of the 4L - .com seems to be sizzeling down. This class of domain, which is about the bottom of the list, is still very common, and still attainable at registration fees. Many investors had hoped that LLLL.com's would be all purchased up by now, but with the steady drops thats a bit far off from now.
If you'll turn your attention to some of the past sales information, you'll see that some random LLLL.com holders due get lucky and catch an end-user, but those sales are rare. You may have luck if you hold onto these through next year, and be able to sell for $20-25 - but at this time, I agree with Trying - youll be right around the $10 per mark.
Justin