Actually shows are no different from ebay !! You see wide variations in prices at shows as well as ebay, but it doesn`t do any good if no one pays that price !! Dealers/sellers do not set the accurate value of anything,, the buying public does !! If no one is buying that item,, price and overall value go down !!
You asked for an opinion on the set,, don`t know what you wanted or expected other than an approx value on todays market !!
Your set is cute and should be kept as a remembrance of the person that gave them to you,, not for any value or lack of it !!