Value will also depend if they are "Heirloom" Gen 1 super old also. In that case they could bed worth very much more to collectors, like several Platinums each. You need to look in Stratics and find info for "Heirloom", and Gen 1, and find how to determine what they are. There is plenty of information about this, search and youll find it. I would do that before I would sell them. Their stats also are not too bad. 760 Str is a pipe dream on pp WWs.
Some info:
I had my white wyrm out of the stables and was going to start training it to the 100 skill caps. Someone at the Luna stables lored it and told me not to touch it until I got someone to look at it to give me some insight on its value. He had me feed it gold, which it accepted as food. Other...
community.stratics.com
Hope this helps and gl.