This might be a bit late, but there is a cheaper Pure Chronos that takes an apple iplayer instead, but if you're after a dimmable display, the the Chronos works nicely; it dims about a minute after you do anything to it.
Having said that, there are niggles with it that I'm hoping to sort out with a software upgrade when I can find the right usb lead. The alarm doesn't always work, and the old model had a separate Saturday and Sunday alarm, and you can't find the power switch in the dark very easily. Apart from that, I'm very happy with it.