The Automatic Link is the iPhone of OBD2 adapters. It's typically priced at $99.99, a price up to ten times higher than what competing hardware goes for on Amazon. What the product has that those alternatives don't, primarily, is a dedicated app that came to Android earlier this month. The gadget is currently available on Amazon for $79.99, 20% lower than its usual price.
People willing to experiment with other apps such as Torque or Dash can save themselves a few bucks by using any OBD2 adapter they wish, but others who would prefer a more plug-and-play experience may opt to pick up the Automatic Link.