Geez…$170 for a hydro brake upgrade does not really seem like a lot of money to me…not given how important they are, and not given it’s 2022. I’m pretty sure I paid more upgrading to XTR V-brakes when those came out in 1996; if memory serves, those were $125/
pr retail.
$500+ for something like Paul Klampers or Yokozuna Ultimos would be expensive…