Well thanks for all the responses guys
I think you could be on the right track Halcyon, and if you find any archival quality sleeves let me know
I have to say it doesn't surprise me that resellers and importers know diddly squat about such things....usually when you ask them this kind of question, their eyes glaze over, the mouth drops open in stupid confusion and they finally ask you 'What does archival mean?'
They think all you'd want to know is how many you can cram into the thing....oh and possibly the colour!
Stay cool everyone