Oh come on Rate One.
If you are at EDI I understand it is about 4k a year just to park.
If at Cumbernauld, the charges are in the tower. It used to be about 300-odd quid a month plus landing fees.
Don't know about GLA or PIK, but Perth also have publicly posted charges.
As do microlight fields like Thornhill and East Fortune.
That leaves Dundee, Glenrothes or Kirknewton - or further north to Inverness Wick and Aberdeen.
The more help you give, the more help you are.