When I started interviewing out of grad school, I REALLY stretched to go buy a nice suit from Neiman-Marcus, a Valentino at $700 in 1995. The suit was gorgeous and the tailor at N-M did a beautiful job adjusting it to me.
I could be considered, barely, middle-class--certainly the lower end at best. The suit absolutely paid for itself many times over--that's a different set of stories.
That Valentino is now closer to $5,000. Inflation says that Valentino should be about $1,200. I suspect that even at $1,200 most students couldn't stretch for it today.
So, is Neiman-Marcus to blame for going further upscale given that they probably can't make any money in the middle anymore?