Fifty bucks? Hmmm, I'd say a reasonable price for a Quadra 800 with a monitor and printer is somewhere between free and $20. These are machines that should really be retired. So people don't want to spend much money on them unless they're diehard collectors that need that one last bit or piece to complete their collection.

Truth of the matter is that these machines aren't useful enough to have any practical value, and they're not rare enough to have any significant financial value. So my appraisal stands at between $0 and $20.