Where do I go to find the value of German wines?

[cptibclc]

I have two wines that I knokw one is a collectors item, but do not know where to look to find the value. One is from a small winery Kurfursten Haus Weinkellrei - Eiswein 1991. The other is from Weingut am Rosenberg - Mosel-Saar-Ruwer 1995er Osanner Rosenberg Spatburgunder Rotwein. Anybody Help?????

[Bucko]

Drink them - they have no collector's appeal. 1991 was a mediocre vintage and the producer is not a highly sought after one. The Spatburgunder is a hard sell in the US.

Bucko