not much

brackets are £20
disks cost £20 for the pair
calpers i got off a mate from a xr4x4 would say about £15
rs2000 hand brake was £23.50
pads £7

if u go for uprated stuff it will cost more

i got most of my stuff from autoworld (like partco)

but i asked for a escort xr3i 130bhp hand brake cable cause it was cheaper and its the same