I looked in Carrefour and did not find any air filters at all.  Will take another look.  Did not check Jumbo though.  I would disagree that "anything less than QR 1000 is a fake."  The one I bought is a room size model and comparably bedroom sized ones usually only cost around $100 or so in the US.  As I said I checked the Sanyo site and it is a HEPA filter.