As for worn parts, most of the bikes I found have fresh looking cones and races on most of the bearings. Like they were ridden a couple of times each summer for their entire existence, and never once cleaned. The main thing I run into??? Overtightened headsets!? So tight, that there are dents in the crown race? So, if you don't replace them, you get the sectional steering, lol. Other than tires/tubes, cables, brake shoes, etc (IE: Normal wear items) I never have to replace a part? I guess they all need to be bought in person, and checked over for broken stuff. I never have to replace much of anything?,,,BD