I use PCBway, which now supply stencils as well. They don't add much to the price. You get 2 choices in postage, one is DHL, the other is china post. So 1 you get fast, and costs more, and 1 is cheap and takes longer. Stencils and have been great from them, and are made from SS. As a note I use the DHL option, but normally wait until I have 3-4 designs in the cart. They make it easy to continue to add more PCB's, and they can sit in your cart for a month no problem.