But in general, I'd say Serotta (and many high end botiques) hold their value better than those of the Specialized, Trek, Cannondale, Cervelo. I see a lot of Specialized SL3 go on Ebay for less than half price in less than a year.
Serotta does take a longer time to sell because most of the buyers don't know about the brand and they tend to just go for one of the big 4.
But you should buy a bike because you like it, it fits you, etc. Buying/selling bikes as a business is hard to profit.
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