If you're wanting to fly into Edinburgh itself, make sure you have deep pockets. Expect to pay in the region of £200 for landing, nav, parking, "handling" (
sic 
) and security charges for a two-night stay. As for fuel...
You might be better just getting an EasyJet/BMI. Glenrothes, Dundee, Perth and Cumbernauld are all not too far away and affordable but then you've got the hassle of getting to where you want to be. Trains, taxis etc. Much easier and cheaper just to let somebody else fly you straight there...
I hope Edinburgh's new owners (whoever they end up being) will treat GA better, it's absolutely farcical how poorly served Scotland's capital is with regards to GA. There again pigs might aviate before GA is seen as welcome at reasonable price at a "big" airport like PH.
Smithy