You read right... Crossway is giving access to their Global Study Bible away for free! (This is of course digital access only; don't expect them to mail you a physical book for nothing.) Crossway has been so generous over the years in providing digital access to incredible resources like this for minimal or no cost - take advantage of the opportunity to dig deeper into the Word!
The easiest way to jump into the ESV GSB: ESVBible.org (click "Apps" then click "Global Study Bible Online"). You can also purchase access to a number of other study Bibles there, if you are so inclined!