Amazon is no stranger to offering solid deals on brand-spankin-new handsets (and with Wirefly out of the way, it essentially has little-to-no competition these days), and it's now offering a great deal for potential Sprint customers who are considering the HTC One M8.
For the time being, Sprintsters can grab the handset for $150 on-contract – a good price in itself – but those who open a new line of service will also get a $50 Amazon gift card. If you shop Amazon as much as I do, that's basically just free money. I don't know about you, but I pretty much like free money.
Anyway, it's hard to say how long this deal will go on, so if the M8 on Sprint is your next phone, you should probably just grab it through Amazon. Oh, it's Prime eligible, too, so you won't pay a penny for shipping and it'll be by your side in two days.