Price check on some Atomiswave ports..

I have some PS2 imports that I am interested in selling, but I don't keep up with market going prices on imports these days and could use some help. Can anyone suggest some fair prices for these?

KOF XI (near mint)
NGBC (near mint, case has one minor nick)
Metal Slug 6 (near mint)
Samurai Spirits Tenka (near mint)

These are all original releases, not part of the BEST line.

I also have Sega Ages Phantasy Star I and II, any ideas on those?

Thanks in advance!

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