Sale ~ Nag Hammadi Library

https://www.logos.com/product/4240/the-nag-hammadi-library-in-english-4th-rev-ed 

Hi Willie! (I put in an active link to be helpful). The forum software doesn't recognize a link without a space or similar after it. It's kind of quirky.

I have that volume; it's both affordable and good for look-ups (includes the important indices used for Nag Hammadi).

The one I use more frequently is:

https://www.logos.com/product/7137/nag-hammadi-texts-and-the-bible-a-synopsis-and-index 

This one is obviously more pricey.  It's primary use is hooking it to the New Testament using a 'Cited By' tool in Logos to see how later 2nd century non-orthodox writers approached the text.

Plus there's various apocrypha NT volumes, which tend to standardize (including a greek interlinear by Rick at Logos).