This is kind of cool. But I am slightly skeptical that maybe these boxes are not newly printed instead of newly discovered. Seems odd that they would just have boxes and not the tapes to go with them. I know that in the early 90s a mom and pop that I went to a lot in my home town one day got in a ton of bargain priced big box wizard titles in mint condition, so it seems like Band had a clearing house with cassettes back in the day. I remember picking up Headless Eyes, Virgin Among the Living Dead, and Fear.
But I guess anything is possible...and even if they are technically reprints it would probably be impossible to tell.