I'm re-building a cup n cone BB from an 84 Trek 520. The Sakae axle is in very nice shape as are the bearings. The cups are a little iffy and I can source them from Harris Cycles for $20+ or get a full cup and bearing set from Pyramid and Amazon for $3.55+. Is this a simple "You get what you pay for" or is this a good deal? Any comments on Pyramid parts from Niagara Cycle Works!