I couldn't help but compare this to a few higher end shadows that I own which are priced a lot higher.
This was a bit more of a shock, it's not a 100% dupe but it's not far off! The gold is slightly browner and the white is not quite as bright in the Beauty UK trio but applied on the eyes I struggled to see a difference. Actually the white in the Beauty UK duo applies more evenly then the Nars as it seems to adhere to the skin better. The Nars Duo retails for £23.50.
I can be a bit of a make up snob at times but this just goes to prove that a higher price tag doesn't always mean better quality!