Now we are searching!!!!

We want to duplicate the Rudesheimer Kaffee in the USA, so are looking for cups such as these. eBay had them for $20 and up. Needs to be less than that as we need 6-8 cups. Any ideas?? Our guide just told me at breakfast that the Flea Market in Cologne on Sunday probably had them for 1€. OMG do I wish we had stopped. ( of course on Sunday, we had no idea about Rudesheimer Kaffee!) and there was no way Bob would have allowed a stop for " stuff ".