AT&T and Sprint HTC One going for $79.99 up-front for new customers, $99.99 for upgrades

Amazon's one-day sale on the Sprint and AT&T HTC One has begun. For today only, HTC's latest handset is being sold at a reduced price of $79.99 if you're a new customer, or $99.99 for upgrades, which is a pretty good discount on our favorite Android phone of the moment.

If you're interested, check out the links below --