Been antiquing my whole adult life. Best (free) resources are in the library and B&N. If you want to experience the whole world of antiques yourself go to a couple of estate sales and/or antique stores in Duluth to see how things are priced.  W/o seeing it and not knowing style and condition I'd ask $800 and take $500.  All the pieces matching (if they do?) will be worthy of the $800 figure. Don't ask attendants in the antique stores as they are the dealers and will low ball you and try to buy it themselves. Welcome to the world of antiques.