Yep, I have an Aeron at work and an $80 (from Sam's Club) "Office Star Matrex Meshback" or something goofy name like that at home. I use both regularly and have no preference between the two. I would think a startup that needs the meager funding ycombinator deals in would be crazy to blow it on an Aeron.

Seriously. I use an Aeron in the office, but at home I use a ~$100 staples chair. I don't really care which I'm sitting in much.

A folding chair though..that's just plain crazy.

Yes. It's called a second hand Aeron.