If anyone knows of a source, please let me know!
You ask if ‘it’s a good deal’, that’s a very difficult question. The original SC2 V1.05 dates back to 1995 and so the condition has to be questioned; has it been kept in a reasonably dry environment? If it has been in a studio all the time then there’s no reason why it should not work as good as new.
I cannot comment on price; I know that some of these compressors are selling for around £1000.
I have the very first original SC2 which I built myself in 1984. It’s the one that I sprayed with the lurid green car celulose…. that now everyone actually likes! Perhaps someone will make me an offer for it one day.