This release has been recently deleted from the Time Life website.
Instead, you can access to a saved copy of it from wayback machine, here:
https://web.archive.org/web/20220519194316/https://www.timelife.com/products/the-best-of-cher-deluxe-collection

Unlike the other (individual) editions of I Got You Babe: The Best Of Sonny & Cher, which are 10-disc boxsets, the one included here is a 9-disc set (featuring different contents).

Barcode: 6 10583 64869 0 (The Best Of Cher - Volume 1)
Barcode: 6 10583 64939 0 (The Best Of Cher - Volume 2)
Barcode: 6 10583 63679 6 (I Got You Babe - The Best Of Sonny & Cher - Volume 1)
Barcode: 6 10583 65049 5 (I Got You Babe - The Best Of Sonny & Cher - Volume 2)