If you can find some domains within the ones you found that are actual words or recognised acronyms, they are certainly worth something, but as it stands at the moment random letter LLLL domains (eg. "zxqi.com") are hardly worth the reg fee... this shows why there are so many freely available for public registration.
I think that all domains are gaining more and more worth every day with all the big sales that are going on, you will notice that all of the ones of major worth are being snnapped up as soon as they are dropped. So mainly, (unfortunately) "If they ain't bagged already, they aint up to much" :hehe: