I bought my High Rise Dakars from Into Bikes. Here's the link.
Renthal Dakar High Handlebar
They're currently £39.49and are excellent. The bar end weights don't fit back on as the internal diameter is too small but I don't find vibration a problem. I did read on a post on the HUBB that any vibration can be cured by pumping the bars full of silicon sealant, but I haven't tried that just yet.

In answer to Bergspre's problem with mounting the heated handlebar switch, this is where I put the one for my Oxford heated grips.

Geoff