Blotting paper. Where can I get some?

[eatsshootsleaves]

More home science experiment rather than arts and crafts but can anyone tell me where I can get some other than online please? Plus is it expensive?

Don't know about cost but I would have thought any arts & craft suppliers would have some - I can think of 3 independent shops round here I would try and failing that - John Lewis?

Thanks for your reply. I have resorted to ebay as I'll only ever need a few sheets.