I had a similar experience a few years ago, as I work in an office its a shirt and tie job, weekends are jeans and jumper, the salesman in my case actually said that the cars in the next row were a bit lower on price and would I like to look at them , this made me say something similar to "excuse me but I know what I can afford just because I dress like this do not take it for granted that my income is not sufficient to purchase the cars I was looking at" Do what I did went somewhere else bought my dream car took it to the first salesman at the garage and said "HEY LOOK WHAT I HAVE PURCHASED, HAVE A NICE DAY" I felt great.