https://www.google.com/search?client=firefox-b&ei=AsmmW9u5IOvCjwTNxJrYCw&q=Haviland+%26+Co.+barbotine+&oq=Haviland+%26+Co.+barbotine+&gs_l=psy-ab.12..35i39.16146.20031..23702…0.0..0.397.2358.0j15j0j1……0….1..gws-wiz.AnTPbAumRlw

Mmmm,, I would ask what their offer would be !! Then look on some of the online sales sites and see what comparable items sell for !!Keep in mind that your pitcher is missing the lid and is not as elaborately decorated as most I have seen !! Then just pick the best offer !! But they pay for the shipping,, not you so what ever it is would be plus shipping !! Look through the google listings above and see if you can find something similar !! Especially the ebay listings !!
Wouldn`t hurt to tell them that there are several that are interested so you will look at the best offer !!