Pm sent.I'd also be getting a 2nd quote, what manufacturer are the quoting to use? If its ppg I wouldn't be surprised as that was £90 a liter the last time I used it.
I'd be expecting paint to be costing them way less than half of what they quoted for an external only respray
FYI I'm quoting £10kish to fully paint a t2 inside out and underneath if it's fully stripped.