Never underestimate the fanaticism of Rush fans. Speaking for myself, and I'd bet many others aren't far off, I'm pretty certain this will be my last opportunity to see Alex and Geddy live playing their music. I was really bummed I missed R40, then doubly so a few years later when Neil passed. At first I completely blanched at the $, but later reconsidered. I got two seats for less than half what I'll be shelling out for a Stadium XL to play in my bedroom.

I'll be meeting my Rush buddy from the dawn of the 80s, too, seeing him for the first time in about 20 years.
If it costs me 10-20 dinners out over the balance of my life, so be it.
I'm also intrigued by their choice of drummer, and glad they didn't just grab someone who would approach the tour like a gig in a Rush tribute band. By going outside the box they are letting their catalog grow/evolve, at least a little, which I suppose is par for the course for those guys.