Very hard to find these comics, especially in high grade. I have up to #34.
Issue #1 is a real toughie to find. I know of one high copy only. It cost me a fortune! Though these comics rarely show up for sale, there is a limited market for them in the UK. But then again when I have seen them for sale, they sell! Worldwide it may be a different story with strong markets in Australia and New Zealand and a pal of mine from South Africa says he collects them.
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.