£300-350 for a used set of Vern's.
Try Deak, he had some off me and might want to sell them on after his trip.
You could of course hire them if you just need them for a short while.
I've tried Caja's and Vern's, and now have Touratech on my KTM. I much preferred Vern's of the three. I'm sure others have their favourites too for different reasons ....
Nin