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Found one for you.
When I did the mail-interview booklets I sent them out into the network. This was the 90-ies
For subscribers I asked 3 US$ (postage and printing).
Seems these booklets are now on the market already. One of them (the mail-interview with Dick Higgins) turned up here:
And now you can buy it (including sending) for 35 euro's
After the exhibition in the Milkyway I printed a 4 pages newsletter for all participants.
They now try to sell this for 45 euro's at:
FOR SALE on ebay: $5.00 Buy-It-Now
19 sheets of Brain Cell are sold for just 1500 US$: