I was browsing eBay UK and from the many items it seems as though someone's collection is for sale. Here is the direct link to the search for the large number of Uncle Will hopper cars. https://www.ebay.co.uk/sch/i.html?_...0&_dmd=2&rt=nc&_odkw="z+gauge"&_osacat=180250 And the direct search link to the sixteen Pennzee hopper car listings. https://www.ebay.co.uk/sch/m.html?i...d=p2046732.m570.l1313&_nkw=z+pennzee&_sacat=0 I've bought from the seller rails-sheffield before and they're good people. These buy-it-now auctions are not listed international and postage to the US is not specified, but they'll gladly ship to the US. There is a simple work-around if you find any that you want. Use the buy-it-now feature, then commit to buy, and then ask for an ebay invoice. -Mitch
More - also in this seller's list are several hoppers and other cars from the Freudenreich Feinwerktechnik projects listed as FR Z for short, Z-Bend Bill Kronenberger commemorative and ZTrack Magazine hopper cars, Marklin Illinois Central mogul set in yellow and one in green, MT 5-unit US Army set, and a raft of other Micro-Trains cars and coach sets. The search link to rail-sheffield Z listings. https://www.ebay.co.uk/sch/m.html?i...0&_trksid=p2046732.m570.l1313&_nkw=z&_sacat=0