Thanks Trevor, but I don't think my Blu ray player can play PAL stuff. For PAL DVD's I just use my computer but it doesn't do Blu rays I'm afraid.
Amazon in the US actually has three versions on Blu ray, the original, the director's cut and the 40th Anniversary Edition. Only the last one is $35, the other two are around $20. I was just griping (as usual) about how they could want $35 for yet another version which only differs from the previous ones in that it includes a couple more featurettes