Personally I think it's worth a good amount. It has the things on an s12 that you almost can't buy anymore. Looks mostly original, clean body and interior, V6 & 5 speed. The fake nismo stuff, and china wheels should be ignored lol.
I don't think it's worth 10k quite yet, but $5-7k wouldn't surprise me. I hope that fans start taking these cars seriously enough, and recognizing that we are losing these cars rapidly to age.
But bottom line is that even if it's not worth 10k, whatever the seller will come down to is the right number. It might be worth 10k to him, and never sell.