Swallace, I have nearly every eyeshadow color MAC makes and many UD single shadows as well as the Naked 1 palette. While there may be colors that can be used as dupes, I personally find the Naked Basics palette to be unique. It has every color you need for an everyday look right at your finger tips, plus the black shade in case you wanna shake things up. What I love about it is the formulation of the powders, because as you know, UD has awesome shadow formulation. The pigmentation is awesome as well.
The colors go on like butter and blend so well together. It's my go-to palette when I am in a hurry, but I love it equally as much when I could take the time to use my other palettes or a mix of my MAC shades. The upshot is, in my opinion, the Naked Basics palette is well worth the $27 it costs. I thought I didn't need it in my life because I have the Naked 1 and so many singles of UD shadows, the ones that would make up the Naked 2. I also thought it would be a boring palette but it's so not. I don't regret buying it. I love that all of the colors are matte and that on a busy day, when I'm in a hurry, I only need to reach for that palette. I think you'll like it. Sorry to be so long-winded, but I hope I made sense. Let me know how it goes and have a great day!