Def need a second opinion, but as a general idea, under $10 each for the first five listed (I am thinking more like $5 if in super good shape) and I am guessing probably at least $15 each for the others if decent cond, maybe more if in really great condition (at least, here in the US where the post-1998 (or ‘99??) g2s weren’t released. Not sure about prices across the Pond)
Another opinion would be a good thing, here, though.