They are very collectible releases. The sales enable me to pick them up at an average of AU$9 each. The regular prices from Network's own site are actually very reasonable to start with too, even more so than on Amazon UK.Amazing collection. I only have 27 releases in thin cases + Edgar Wallace Anthology box set.
I have now checked my second copy of "Duel in the Jungle" and it's the same. And I now think it's a badly-placed layer change. Another disc with 2 versions of the same film ("You Can't Escape") has a similar issue. I think it's rather strange that Network - or whoever authors their discs - would choose to place the layer changes on the dual-layer discs in such interruptive areas, instead of in-between the material.Just checked my copy and it seems to be OK.