Isn't it obvious in this example that selling the hat is a waste of time and potentially money? Much better to tell the well-dressed guy to go and haggle himsel

Isn't it obvious in this example that selling the hat is a waste of time and potentially money? Much better to tell the well-dressed guy to go and haggle himself, so HE's the one taking on the risk of not getting the price down to $10 again, and HE's the one spending his time. I mean, you just bought a hat, why sell it for no profit?