yeah I just read that.@Timpo I do not undserstand why you think it is cheaper to install full hydraulic on RadWagon. See my post above. It is not cheaper. It almost cost double to instal full system vs caliper only due to tube replacement and bleed. The bike shop told me that the tube will cost me 40 bucks alone.
Why don't you just install it by yourself? It's time consuming but it's not THAT hard.
If you're uncomfortable replacing the hose, why don't you bring the brake kit to your shop, and pay the $40 so that they can just install the new hose.
(You would need to know the length of tube, obviously)