If I had to guess I would guess it has to be a China made single plated stack. I actually looked into these at one point because they are very inexpensive but the quality also matched the price.:thumbdown Most likely they would have little rust spots all over them within a year.
Josh knows what I am talking about.
May also be a blem or second that they are are sellling.
Just remember, you always get what you pay for.:thumbsup