That amount of money made my brain explode, now I must rely on my pet hampster to keep me alive.
Honestly I wouldn't go for that amount though.
Listen (online) to MUSIC THAT KILLS PUPPIES (Mondays, 8PM est) on WKDU!
Honestly, that's way too much money for any concert. Unless that $253 gets you in backstage, or something. Lollapalooza is less than that, and it's a 3-day event. Don't waste your money.
If you decide to go anyway, don't go with the floor seats. Your girlfriend probably wouldn't like it, and if this is your first concert experience, you probably won't like it. Legit seats are the way to go.
I wish I had a cool sig. But, instead, I have this.