A:Answer I believe it is $624 if purchased outright.
But the offer from Best Buy is either:
$1 if purchased as a new line or upgrade on a 2-year contract,
Or, $200 off (so $424) if purchased on a device payment plan ($17 per month for 24 months) which you can pay off at any time. This is through Verizon and is essentially a no-interest financing option.
Both of those offers also include a free JBL SoundBoost Moto Mod accessory (worth $79), which I do like so far.