I see that this post is a little old, but it had no responses so I will try my best. I have no idea where Willow Springs is, so I can't compare. However, my husband and I both grew up in Cassville so I can offer some feedback in that area.
Here were your questions with the best answers I can compile
Questions are:
How far to Home Depot a Wal-mart or target, and a Costco? In Cassville, there is a brand new Walmart Supercenter. There are several run of the mill fast food restaurant chains, some locally owned restaurants that are quite a bit nicer, etc. There is no home depot in the area....as this isn't really a Home Depot area. There is a home depot in Springfield (about 1.5 hours away) or one in Joplin (1 hour away) but neither store is that impressive. However, in Monett (10 minutes away) there is a new Lowes store. Also, there are Lowes locations in Carthage, Joplin, Springfield (2 stores), etc. There are also some locally owned home improvement stores in the area but I would avoid them, locally owned tends to mean higher markup around here. I have no idea what a Costco is...but I know we don't have one. The closest Target is going to be in Joplin or Springfield.
Access to services? Drs., Dentists etc. There is a hospital in Cassville, as well as several family practice drs and dentists. My family always has chosen to drive to Springfield for anything health related...just personal choice.
Is it usually windy? I think we are pretty average. We can have some strong winds, but then there are many times where there is just a slight breeze. This is most common around here.
Not really important, but who has the best gas prices these days, OK or Mo?