All of mine have been riders, or bought w/intent as ~$200 flips. Of course my keeps/riders have been more second tier rather than the top offerings from the builders (Gitane TdF, Trek 760, etc).
Less individual bike component wear is one of the advantages of having multiple rides.
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72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff