You don't mention if your looking for Brca legal cells but if your not bothered about that then I recommend these from the uk hobbyking site -£21.87 a pair plus about £3 postage and here in a few days with no risk of customs charges either. These are miles better than any of my Brca packs that I paid 3x the price for.......
http://www.hobbyking.com/hobbyking/s...ddle_Pack.html