Photax do carry Efke PL100 8x10. I should know because I received 2 boxes from them about a month or so ago. Perhaps they are only out of stock. In any case as you say they only sell within Scandinavia. Strange about Fotoimpex as I thought they are quite close with JC and Efke's manufacturer. It would appear that despite being made in Europe Efke is certainly a rarity for us Europeans. Perhaps someone from Fotoimpex can enlighten us about whether they will continue to sell this film or not (I do know that they participate in APUG).
I will need to order film soon and will be calling on Photax. If they do have some how many boxes do you need? Send me a private email if you so wish and I will try for you.