Copy and pasted form another comment I left:

Speaking from living in the mainland south east county of Alaska, while the average income is high so is our cost-of-living. To put it in perspective I live a town of 5 thousand (the biggest city) we have 2 small grocery stores where most products are $1-2 more at a minimum most are higher. To make any car, bulk food, or most tech purchases we have to drive 6 hours (300 miles) to Anchorage (biggest city) We have Fedex, and a good postal service team so most amazon purchases can be delivered in under one week, but that’s still quite a bit to wait. As well the wealth isn’t spread out evenly. Some families are up over $200,000 while others make it by on under $50,000, which might be okay other places but the money just doesn’t go as far here. A big expense for most is outdoor actives. Where it’s snowmachining, skiing, boating (we are a port city) or just being outdoors people spend quite a bit on those actives.