I have been to the Montreal race twice, GA both times. It was flat out incredible. I loved being right up on the fence as they tore past. The sound was amazing, though that was when they had v8 through V12 engines. These V8's are intense but I haven't been that close to them yet.
And, with the GA, I could walk wherever I wanted and not feel I was wasting my money. It was the 90's, and I think it was around $35 a ticket for GA.
So yeah, $5000 for a "private seat" is stupid high, especially for less to see than you would at home on TV.
Someone better tell the boys they gone be a'turning left AND right though.
Bob