Hot Deal: AT&T’s HTC Inspire 4G, Sprint’s HTC Arrive and Verizon’s Droid Charge all offered for less on Amazon

It’s smartphone bonanza at Amazon, which is offering few of the hottest devices for less. Without further ado, here’s what they got:

AT&T’s HTC Inspire 4G is available for $29.99. The Android-powered smartphone rocks 1GHz processor, 4.3-inch WVGA touchscreen, 8-megapixel camera, 4GB of internal storage and so on.
Sprint’s HTC Arrive could be yours for a single penny, which is $199.98 less than its original price at Sprint. This Windows Phone 7 device comes with a 3.6-inch touchscreen, full QWERTY keyboard, 5-megapixel camera, Wi-Fi, etc.
Verizon’s Droid Charge could be yours for $199.99, $100 less than what Verizon is asking. This LTE-enabled Android smartphone features a 4.3-inch display, 8-megapixel camera on the back, 1.3-megapixel camera on the front, 1GHz processor, and other “standard for Android phone” goodies.

Of course, you’ll also have to sign a two-year contract with the carrier — whether it’s AT&T, Sprint or Verizon — to get the phone you like…