A big bar of Galaxy chocolate (390g) is only £2 at Asda, available instore and online. Although online, it says £2, or two for £5. I purchased two yesterday with my shopping and they still came through as £2. Must have been an error or something,
It costs £1 for a 125g bar - so in my opinion, a very good deal.
Offer valid until 01/01/2010 it says on Asda website.