My current whip, a rescued Trek 610 series bike. I can't figure out the year. The serial number puts it in 82 but the seat tube decals ad the lack of braze-ons make me think it is earlier (79?). My other Trek (the 710) is an 81 and the seat tube decal was a one piece decal.
I currently have about $5.00 in this along with parts I had lying around (wheels, seat, etc.). the only cost was for a 5 speed Sun Tour freewheel (NOS). It is a great road/tourer. I plan to put many miles on it this year while rebuilding my 710.