I took my cheap road bike which I got from online (about $300 , not cheap for me actually) and asked them advice about how to convert it to an SS. It's not a fixie/SS specialized shop so they don't have
the parts that I need. But they kept talking to their own people like " it's just a low quality bike he got online". I really felt humiliated, even though they were not talking to me. And when I realized they don't store track crank and freewheel in stock and asked them what I should measure to make sure I could buy a compatible crankset myself, a first guy just kept saying he does not know I am asking (I was sure that I have made myself clear), and finally a second guy made it clear:" if you ask us to do it for you, we can measure and determine what you need based on our own knowledge (if they have any); but if you want some free advice, we don't do that". All right, maybe I was just too stupid not to get that message earlier. I don't know how expensive or professional their knowledge is, but I just feel miserable for them.