I got one awhile ago form Argos. I think it was a maximuscle make and cost about £5. Never used it though and my brother uses it instead to mix his protein shakes. I'd imagine that they wouldnt be very good. I'd suggest what poppy reccomended, hand blenders are awesome or have the tetras if you need to have your CD meal when you're out and about.
But if you want one your CDC should stock them.
xx