I very nearly bought an Interarmco Parabellum back in 1970, but at that time I was between jobs and didn't have much cash to squander on guns. I don't remember what the going price was at that time, I seem to remember about $150. There was a brief writeup about it in the 1970 Gun Digest, Page 104.

Maybe six months or so ago, I found one on a table at the local gun show, looked like it had not seen much use and was still in the original box. I don't remember exactly but I think the price tag on it was about $1200. High enough I wasn't interested.