It wasn't until 1982 that creator Xavier Roberts's signature soft-bodied toys were launched under an improved design and new name. They were an immediate success, so finding dolls still in the box from this year or right after can be hard to do, but if you can, it'll be incredibly lucrative.
In particular, you want to look for dolls with the "brat" face mold from the second production year. Look for dolls with a dimple in each cheek and a long nose. This mold wasn't used as much as others in this first production year, so they're pretty rare and can be worth about $100-$500 to the right collector. For example, one recently sold for around $450.