Value of Manga

[GrimReality]

I had a big box of comic books(mostly manga) at my dads house that I now have brought home. These are a mix of titles like Ranma 1/2, Gunsmith cats, Akira, etc. etc.
Do you guys know if they would be worth anything? If so, what's the best way to find out their worth? How should I go about selling them?
If there's no value there, then I'll just let Benjamin go through them and read what interests him.
Thanks

[Vanguard]

It's been my experience that manga doesn't really hold much value unless they're out of print/rare to begin with. My best advice would be to check eBay. If you want the most bang for your buck, list each set individually.