£20 for brake blocks and it says replacement inserts are £9.99
ill stick to my kool stop supra 2's for £9.99 and they last me 2 years and have never let me down on a chrome rim
most of my trials friends actually take a grinder to the edge of their painted rim to roughen it up so the blocks work better, after a while the block wears the rim smooth again and the blocks dont work as good so out comes the grinder again