I'd have to agree with pennywise on this, you get what you pay for.
Kinda like a tattoo adage " A good tattoo isn't cheap and a cheap tattoo isn't good". I think you get the picture.
I think about that everytime I get new ink, and it is easier to justify all that money I'm spending.
But about the jumpsuits, yeah forget eBay. I might go with Bobamaker or LadySewforus(she's the sewing master, right?) and at least then I will KNOW that the flightsuit will be accurate.