>>14,16
The Symbolics DKS operation is a scam run by a former employee who charges outrageous amounts of money to give you a used netbook with Open Genera loaded on it. And unlike Genera, the MIT and LMI systems have been made completely free, and the emulators for the CADR and Lambda are quite polished. You might find, however that these machines are not what you want, as they are quite slow and clunky by modern standards, and likely won't offer you much over what a modern Common Lisp implementation will. I personally think using GNU Emacs and getting into writing Emacs Lisp will offer you a better experience analagous to the whole 'LISP Machine' thing.