How much is an 1882 walking liberty dollar worth?

An 1882 US Dollar would be a Morgan Dollar. The walking Liberty design was used only on half dollars from 1916 to 1947 and on 1-oz silver bullion coins issued since 1986.

The value could range from $9 for a well-worn coin to several hundred dollars for one in uncirculated condition. There's more information at the Related Question.