Yea, I know. I remember when I could get SE/30 boards on ebay for around $5 to $10 bucks.
I would advise not giving in to anticompetitive intimidation tactics.I'll warn you from experience.
If you throw those up on ebay too fast you flood the market and people get mad because you ruin their prices.
What I"m implying is do it man.I'd tell them to cram it with walnuts. Machines should be accessible to the public at decent prices. If people don't like market forces acting as they should tell them to move to a communist country.