It was originally published in 1980, then again by Tor in 1996 and once again by Orb in 2001. I couldn’t find any clear information about the 1980 printing. It did win a Prometheus Award in 1982 for best libertarian science fiction, but Smith himself created the Prometheus Award previously, so who knows if there was any inside baseball in there.
In any case, this book stands in stark contrast with practically any famous science fiction you’ve read, and that’s notable at the very least.