I think is how you approach the sales as a person, and build that relationship. Salesmen and saleswomen have seen all kinds of shoppers, and they need to figure out which types to ignore.

Think of it this way, they are making a living, while we take our hard earned cash to buy an expensive toy. While you're shopping, they are working. But of course, when we're working, some of them off-day.

Some ppl go around shopping for the cheapest bike down to the last hundred or two, and expect the best after sales service. Honestly speaking, some shops can afford to choose their customers now - too much money going around but not enough bikes to supply.