The palette actually costs less than £5 in the UK. Here is is bit pricey but you can get it with a discount of 30% at Jabong.
Another plus, apart from the cheap price is the surprisingly amazing quality of the shadows. They are creamy, highly pigmented and long staying shadows.
I do not own the Naked 3 so I couldn’t get side by side swatches. But you can definitely check out online for them.