I always make a quick stop by the jewelry counter area at the stores, but I almost never buy jewelry (too hard to investigate quickly). Along with jewelry, this area is usually a hodgepodge of watches, perfumes, lotions, makeup, and miscellaneous small electronics or packaged items.
Discontinued perfumes (including old formulas of perfumes still being manufactured) and other scented products can easily bring $50 and up, even if only partially full. I find that perfume is often marked up beyond my target profit margin, but occasionally I have paid up to $20 after looking it up. Make sure to include size when reviewing listings. Bath & Body Works is extremely popular, and certain discontinued scents are very desirable. Also, L'Occitane products are a good bet. A couple sales listed on this page that might surprise you include a half full bottle of bath perfume purchased for $2-3 and sold for $43, and Lush Silky underwear powder. I purchased all eight cans of powder that were in the case at $2 each and sold in sets of four for $30/31. In this case, I happened to find this product in a discontinued packaging that people preferred (the newer packaging of the product is not nearly as desirable). At the top of the linked page above, there is a link to used, sold fragrances $39 and up (check those out here; note that many of the pages have preformatted research links included to help you up your game.)
This is also a great place to find expensive anti-aging products. One of the most popular brands I find fairly regularly is Arbonne. They have multiple skin care products such as cleansers, which can be profitable if obtained for a couple dollars. However, the big money is in the anti-wrinkle stuff. Other brands can bring even more money, but I don't find them as often. There are also facial toning products worth quite a bit of money. Members can view more specifics/photos regarding these products here.
Other miscellaneous finds in this area include a digital stopwatch worth about $100, a new in box Cadillac owner's medallion, and oils for a reed diffuser or other aromatherapy products. As always, look up by brand and model/style/scent/size.