This is probably my favorite sleep outfit ever made by AG! I think the print on the nightgown is incredibly dainty and feminine. The set isn't perfect, mind you: the slippers are backless and slip off in the way that slippers do, and while the sleep mask is a pretty accessory I've yet to meet a 10 year old who wears one. Plus, the mask has a big old tag that needs to be clipped or tucked under. But despite those quibbles, it is a win and merits an A.
I don't tend to see this set show up much on the secondary market so I can't speak to its going price, although it originally retailed for $18. I received mine as a gift from a dear friend and I feel very lucky to own it!