I get the same price as Scotrail : 34.20 for Montrose->Glasgow queen street.
And if i understand the "plusbus" feature doesnt works so i need to buy separatly a Glasgow Queen Street ->Glasgow airport bus ticket ?
If i search for the whole journey on east coast train, i am sent to Paisley Gilmour Street, but then i still need to take a bus, is there any interest going through this station ?