From what I've read, the story mentioned above is a recycled version (with more Silver Age elements like Bizarro added) of an earlier story from "Superman" #114 in July 1957, "Superman's Billion Dollar Debt":
http://www.comics.org/coverview.lasso?id=13629&zoom=4 (the cover of "Superman" #114)
http://www.comics.org/details.lasso?id=16494 (info/the cover for "Superman" #148)
Some online (and a book I read about Silver Age comics once) suggested the two stories' similiarities might be handwaved away by declaring #114 as happening on Earth-2, with the latter, updated version in #148 happening on Earth-1...