Hello, fellow shell afficianados!

I am wondering about a correct price at which one could
sell a beautifully made show exhibit case, with not only
top glass but front glass inset also.

I want to help a friend sell a collection; we might be
able to buy the shells, but we have no room for the
exhibit cases (plus, I don't envision myself as showing
competitively at this stage in my life).

Cordially,
Linda

P.S.  The cases could not be sold until Spring, as the
house they are in is undergoing extensive renovation, and
one cannot even get to the collection at this point.