That's a kick in the tits because Bunhouse Road is actually more expensive than Bunhouse Car Park. So you paid more than you should have (£3.60 per hour vs £2.50 per hour).
Also, since when the fuck is Bunhouse Car Park £2.50 an hour? When I worked at Glasgow Uni a few years ago it was £1 for four hours or £2.50 for all-day parking.