Cheap stainless eBay headers?
Not commenting on anything other than the Chinesium mindset: My job involves a LOT of stainless (I'm converting a machine we manufacture to stainless now, actually) and we've sent some people to China for business (purchased products).
The Chinese definition for stainless can be any particular material: painted, coated, plated, actual stainless, or (my favorite): polished.
And of course, there are many many grades of stainless.
Grandpa's adage: You bought cheap, you got cheap.