Have just bought a Leapster Explorer hand held console for my daughter for xmas @ £47.99 with a free game (gone back up to £59.99 now and games up to £19.99) from Argos, so was looking for the best price for the games and for the Leaplet App/Game Download cards.
This looks to be it, ToysRus have all the games and the leaplet cards on Buy One Get One Free, with the original selling price being the same as all other retailers so a great deal.
So 2 games are £19.97 and 2 packs of 2 download cards are £9.99
Just don't go buying all the stock before i get chance to get there in the week :D
Online obviously incurs a £4.95 delivery charge unless spending over £150