I am also going to the glasgow gig and have seen them many times, you cannot expext ticket prices to stay the same over the years, there is a thing called inflation. I don't mind the price, I have golden circle tickets for Hampden, as Bon Jovi usually play over 2 hours so it is well worth the money. The band don't get all that, there are so many people who have to be paid for this and not to mention all the people who have to come away from families to pull the shows off, anyway, hope you go the the glasgow gig, it will be great