Buying the same comic book every day

I had this question pop in my head and now I can't get rid of it...

A man goes back in time to 1938 and buys Superman #1 (Action Comics). He returns to the present day and sells it for a huge amount. He then geos back to the day before his last trip and buys the same comic book, returns to present day and sells it again. He continues this, going one day further back each time.

What happens? Will he successfully purchase each comic book?