Retail source says Nintendo is trying to clear the old system from shelves.
http://www.nintendoworldreport.com/news/39142/wii-u-basic-gets-prices-slashed-in-the-uk
The trade price of Nintendo's white, 8 GB Wii U Basic has been slashed in the UK by £70. The UK first saw these price cuts in late October, but they continue to extend into new deals and bundles for the holiday shopping season.
Bundle offers for the Wii U Basic console include a £199.99 deal from Amazon featuring Mario Kart 8, Super Mario 3D World, Wii Party U and NintendoLand as part of the package. Zaavi is offering a £189.99 bundle including Super Smash Bros and NintendoLand while GAME has an assortment of £159.99 bundles to choose from including two games and an Amiibo. And for those who are only in it for the system, ShopTo has a deal for a game-free system at £149.86.
All of these deals pertain only to the Wii U Basic systems. The trade price of the Wii U 32 GB model hasn't budged and likely will not in the near future.