Original a few euros extra is worth

Because of the price I reach for batteries actually always replicas. I am usually satisfied with this, but I found that even if the other batteries are at the beginning or have equal power, this mostly over the years to shrink more than the original battery. I have for example a 10years old Canon battery that is still usable during Hahnel Replacement Battery for 3 years was at the end.
I would therefore not necessarily pay three times for an original battery. But here there was this low, so it was me the few euros extra value.