It's not area related - I live in rural VA. If you go to a nice restaurant, the bill is easily $100. Heck, to go to Olive Garden with the tip and tax the bill is $60+.
The most we ever spent on a meal was in Banff, Canada - at "The Grizzly House" - a really nice, upscale Fondue place that was simply delicious. It was also quite different than anything we had every had before.....you cook your own mean on granite slabs with different varieties of spiced butter. Meal was $284 US Dollars. There were 4 courses and it took us about 2.5 hours to get through it. It was great !!