though the internet levels that playing field.
Not strictly true. The last operational RAF flying base in Scotland is in an IV postcode - many internet companies view IV postcodes as "remote" and thus add delivery charges, even though a significant chunk (the majority) of the postcode is Mainland UK. Petrol prices in the area are, or were, significantly higher than the south of Scotland/England. Food prices were also often higher, even if locally grown. Childcare charges were also similar unless you are using a Norland Nannie or Montessori Nursery School down south. Cost of living between Odiham and Lossie will be different in many ways, but probably not as different as some might think.