Quadras for $10 each is a pretty good bargain. I would go back to see what else is in the pile - perhaps some of those Quadras have some expansion cards of interest.

That iMac looks like its in nice condition. I would avoid the bondi iMacs as the CRT flyback transformer failure is an issue.

Was this a store that was going out of business, or some corporation? Interesting to see beige macs still in inventory all these years later...