Would you take a cash offer for it? I have a sealed copy of VOYAGE.
Buying both Assassination Bureau and Voyage from SAE is $44.20, so yes, I would take money for The Hitchhiker. Or, you can send me your sealed Voyage 50th and $23.30.
Cash plus VOYAGE cd sounds good to me. Do you have a PayPal account? Please write me at benjaminjoffe at aol.com with your mailing address and other info.