Echoing the idea that SCC is mostly fair in the pricing of bikes. First and foremost, sheesh, let a business make a little money. Second, on the consignment bikes, have seen some craigslist motorcycles end up at SCC after failing to sell and be better priced. Reality check I imagine, considering the dealer cut.
What are you getting for a few dollars more? If you are looking at differing models, a one-stop shopping experience is possible. As mentioned, they've done at least a cursory check of the bike's condition. How comfortable are you, as a buyer, standing in some random parking lot with $10k in your pocket and the owner of the bike says hand it over if you want to test ride?