Ran across this deal for the collection of original Superman movies (I-IV) with Christopher Reeve on DVD at OzGameShop. Not Blu Ray but for this collection, that still works for me. $10.52 + Free Shipping = Deal! Site states limited stock.
*A whole lot cheaper than Amazon US (http://www.amazon.com/Complete-Superman-Collection-Christoph…) or Amazon UK (http://www.amazon.co.uk/The-Complete-Superman-Collection-4-D…).
Very cheap