Fast and cheap at Online store Leipzig

Button cell at a price of 33ct, what am I to complain?
Was ordered from the Online store Leipzig.
Delivery in unprinted blisters - no production date / MHD - the letter a few days later.
Durability seems fine, so run a dog LED collar, which was already running in high brightness a few hours.

Point deduction for missing production date, but with the low price compared to the hardware store / retailers is me not care. So far I could not notice any difference to the single-packaged, expensive button cells from a specialist shop and would buy again this button cells.