Did we really need a second generation of AirTags when the original ones work fine? Apple didn't even change the design of its tiny tracking pucks. Despite the physical resemblance, this new AirTag (which Apple is not officially calling "AirTag 2") includes key improvements in range, sound and functionality that you should understand before you order another set. The retail price of a second-generation AirTag is $29 or $99 for a pack of four. That has been consistent since the original AirTags were introduced in 2021. So far, it looks like Apple and retailers are keeping the second-generation AirTags at their retail prices. However, first-generation AirTags are being sold for as little as $70 for a pack of four, bringing the per-tag cost down to $17.50. We don't know how much existing first-generation AirTag inventory is out there, so that pricing might persist for a while.…