It alot of money but I'm unsure if I'd say it's overpriced. It sure is a bit odd not to include keyboard, mouse, drivers disks (even copies would do) etc... would probably not add to the price but interest more parties.
VideoToaster and Flyer cards aren't exactly cheap when sold on their own and here we also have some other expansions including 060, NIC and what looks as an external scandoubler so 700$ is probably what he could get if selling the parts seperatly... prices tend to be a bit lower when selling it in one lump due to less interested parties with that kind of cash to spend.
