It states on aliexpress that they are refurbished, so used but checked to be working. So they should be N900s. You can try checking the specs from the suplier and I think refunds work at least should.

I'm coming short with N900s but I am constantly hunting them. One went for my cousin to whom I found online 40Eur offer. I only buy with 25-30Eur so they don't come too often.