No, this isn’t April Fools. AmazonWireless is selling AT&T’s Motorola ATRIX 4G for $49.99 with a new two-year AT&T contract. That’s $150 less than AT&T’s $199.99 price tag. Sure, there’s been some hoopla about AT&T’s 4G HSPA+ performance on the ATRIX, but it still packs plenty of punch with a killer dual-core NVIDIA Tegra 2 processor clocked at 1GHz, 1GB of RAM, Android 2.2 (Froyo), and a sharper-than-diamonds 960 x 540-pixel display. AmazonWireless sweetens the deal even further by knocking $100 off of the Motorola Laptop Dock accessory, which typically retails for $399.99 when purchased separately. We called the ATRIX 4G one of the best Android smartphones to ever be available from AT&T when we reviewed it in February, so you know you’re getting some top-notch gear. The $49.99 deal is likely a limited-time offer, so don’t delay if you’re in the market for a new smartphone from AT&T.