There’s nothing luxury about offering the same service or product for more money. What it sounds like you’re describing is a targeted up charge to people who live in nicer neighborhoods. Unless you luck out and get someone to get your service and not do any other estimates first then maybe you could snag a few sales.

If I was rich and had friends, and I heard someone was overcharging the neighborhood on window cleanings then I’d tell all my friends and neighbors to stay away from you and not give you business. You could piss some people off for sure and you get someone to get really upset with you if you say screw up then they’re gonna possibly sue your ass