I think you can buy those folding vest pocket pipes new for around $40 to $60, so they should be somewhat less as estate pipes. There are some upscale versions that go for more, $80 to $100. My impression is that quite a few of these pipes are purchased but not so many smoked regularly. A sturdy smaller bent billiard or other compact shape can serve as an excellent pocket pipe and usually has a more ample bowl, better balance, and doesn't have the folding aspect, a mixed blessing I'd say. However, on ebay you can ask anything ... you might get a buyer. Who knows?