firefighter993
The flight suit you can get from flightsuits.com. They will run you $120.00 U.S. or more, but expect to pay that for a new suit. You can get a surplus suit for as low at 20 bucks from several sources, but unless your a tiny person all the way around, you probably wont find one in your size. The largest suit I've seen that was surplus was a 44R. I'm 6'6" and need a 48L. To be a pilot you need to be small, so there aren't alot of large used suits.
I got mine brand new from a surplus store for somewhere around $30-$40 I think (cotton polyester blend… not the fire/chemical retardant material).
I needed an XL and they didn't have any in stock, so I asked if I could special order one. They whipped out a stack of catalogs, placed an order, and called me at home a few weeks later when my flight suit had arrived. (*winston)