I am about 1/2 local and 1/2 net/ebay. I try to buy locally if at all possible
sometimes I can't find it locally or I can't afford it. MY bike is 8 speeds so
most of the drive train parts I have to get somewhere else.
I rather buy locally if at all possible though.

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Knight-Toolworks & Custom Planes
Custom made wooden planes at reasonable prices
See http://www.knight-toolworks.com For prices and ordering instructions.