It's a nice derailleur to be sure, but I think it is the SX variety and not the SLJ variety making it far less valuable and definitely not worth the asking price of the bike.
Edit: SX410 to be precise.
VeloBase.com - Component: Simplex SX410 T you can tell buy how fat the parallelogram plates are.
but even the SLJs are not so valuable to warrant the price. If it were an SLJ 5500 you'd probably be hard pressed to get $100 for it these days.
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1 Super Record bike, 1 Nuovo Record bike, 1 Pista, 1 Road, 1 Cyclocross/Allrounder, 1 MTB, 1 Touring, 1 Fixed gear
Last edited by cyclotoine; 01-06-16 at 04:08 PM.