This may just be a local deal here in York. Tesco have Pokémon Tournament for the Wii U reduced to £16.00 priced at £40 pretty much everywhere else. I left two on the shelf in York Tadcaster road. They had also reduced Mario Kart 8 and a few others but these had sold out.
It came up as £40 when put through the till but they changed the price after checking the shelf price which was correct at £16.00.
This is in store only.