Mike.....wit your big arse, it would be tough moving around those seats. Those 2-3 minute a seat times would surely turn into 4-5-6 minutes as you run into stains, and vaccing the excess water from the overspray on the floor. I would say at least 3 hours a bus, single tool. I will have a school chair job coming up in December....maybe 350 chairs. I did them last year, and planned on flying through them until we ran across stains and dust. I did buy another PC upholstery tool to help out with the chairs last year. That helped ALOT!
And your wrist and arm gets real tired after a few hundred seats. But I forgot....I'm dealing with young pups here, not 56 year old cleaners. I can work all day, but it gets a little wearing after 5-6 hours of constant cleaning.
At least $300 a bus. Sounds like the local theaters......they want all their seats done for like....$1.00 a piece! Dark, nasty, stanky locations!