12 euros for a battery that looks official. Very similar anyway. Put side by side with the original, the ink is slightly more visible / thick thereon. By minimalist packaging without branding that delivered and shipped by Amazon. She holds a charge better than the original battery that is two years old. It may be refused by an official Samsung battery because the optimal quality criteria do not match or something else but it is functional regardless of security for me. By cons, if I were you I would not try my luck below 10 euros for such products.
