If you're buying a Droid Turbo 2 (starting at $26 per month, or $624 outright), you can purchase another Turbo 2, or a Maxx 2 at half the price, while also receiving a free wireless charging stand. If you're getting a Droid Maxx 2 (starting at $16 per month, or $384 outright), you can purchase another Maxx 2 at half the price, and receive a free tough case or shell holster combo. Verizon doesn't say when the promotion will end. However, this appears to be a Valentine's Day thing, so we assume that it's going to run until February 14.
You can find out more about this offer at Verizon's website (see the source link below). And, in case you're not familiar with the two Motorola smartphones that are part of the promotion, make sure to check out our Droid Turbo 2 review, and our Droid Maxx 2 review.