So I'm an eejit am I?
I recently had to replace one of my boxes as it developed an intermittent fault. Tried Sky, but they would only give me a new box for £60/£65, which just happened to be HD, if I took out an HD subscription for extra £10 per month.
I don't have an HD tv so didn't take them up on their "deal", but bought a 2nd hand box - HD - for £20, and am using that as a normal Sky+ box.
Just picked up another HD box today for £5, which will also be used as a normal Sky+ box.