Anyone familiar with buying antiques? I am looking at china cabinet - but not sure how to determine how much I should pay. It is what I call bowfront with curved glass panels and claw feet - like my grandmother had. There is a beautiful one up for sale, but it has been refinished. I know as a collectors item that devalues it, but as a functional piece that I fully intend to use I'm okay with it being refinished as the original makers mark is still there.