All LBS's that I have ever seen, note, I said that I have seen which is a small percentage of all the LBS's in the US, will not buy a used bike, a few will take a used bike as trade in but they would never scour Craigslist, garage sales, auctions, etc, looking for used bikes to sell at their store.
Now that that is out of the way, Alfeng makes a good point, not so sure if a person could easily score a new road bike with Athena since most bike shops don't even carry bikes with Campy components, even Bianchi Intenso cost $2,500 and it comes with Veloce which is a step down from Athena, but Bianchi's are difficult to find in most LBS's unless you live in a large city, but certainly you could get a new bike with 105 which is great stuff I use it with no problems whatsoever. Cannondale SuperSix EVO or the Synapse Carbon 5 both with 105 would be under $2,000, or maybe a Felt AR5 on sale could be had at just above $2,000 with 105.
Alfeng is also correct in that coming about September and October bike stores will have their clearance sales and would be more apt to give a better deal on a bike of your liking. Where I live there aren't any bike stores that have any of last years bikes in stock, and so far 2017 hasn't come out onto display.