Hi mate, oi don't really want to go less than £60 posted on those, they may look as pretty as XT and XC Pro, but are much better quality, much more intuative to use and rare as hell! Just try to find another pair, i challenge you!
I have started using those shifters regularly and they are the best ever . take a bit of time to set them up with regards to the grips and brake levers but once that is done they are just great .