Seems like a decent deal for a sous vide cooker. Reviews look good but probably need to be taken with a pinch of salt.
Voucher code is on the page
A friend of mine has the Chefsteps Joule which is obviously a lot better than this but over 3x the cost - for 50 quid I'll give this one a go for doing some sous vide recipes.
Now to find a decent vacuum sealer