> In NYC with clean 15+ year driving record my premium is $270 a month

This is terrible. In Germany (major city) I pay 166 Eur a month for two cars, one normal (premium brand) family car and second being V8 coupe. I make about 25000km a year in total and have 6 years no claims. No accidents in my driving history (over 15 years). Price is for full coverage with low excess.

This price is probably driven by higher prevalence of uninsured motorists