The result is the appointment: these batteries actually last much longer than conventional batteries. Next, do the extra cost justified? Actually it depends on the value you place on having less often to change your batteries. So ideal if you are traveling with a battery-operated device (eg camera) and you do not want to have to carry / purchase of spare batteries on site. Ideal also for some devices that consume little but remain on long (LED lamps for example).
In the end, it really is the use you make of your batteries and your commitment to not change often or not that will justify the price. For in an hour of operation, it is not necessarily the winner (or loser) compared to conventional batteries.
