I only got to go there a couple times. Once, back in "the day" of the early 1980's when it was 2 stories of good stuff including tons of old books (not the comic type) upstairs.
The second time was maybe 8 years ago, when it had been reopened as just a one level shop for a couple years. Pretty sure it has shut down again.
However, I bought gobs of back issues through the years from Danny Wilson (one of the original partners) when he did those traveling "antique shows" that went around the local mall circuit. Man, those were the days.