These NWT Nordstrom long black leather opera gloves from a past season (2008?) sold for a respectable $80.00, especially considering they were a size small.
These Italian-made Holt Renfrew black leather opera gloves sold for an impressive $130.27. They were a popular size 7.5, silk-lined, and measured 20" long. The seller said original retail was $180.00. I especially like the three rows of stitching detail on the back of the hand, although I wish the seller would have provided some more photos of these very nice gloves.