I don't think that the DP boards are the best place to get an appraisal myself. Infact I am not sure what is the best place. Who "certified" you as premium? Reality is that it's worth what someone is willing to pay, that's it. You find someone that will "certify" a domain as "premium" and worth $5000 I will find and expert that will claim it's NOT a premium domain but it's worth $500 Or you can post here, and someone will tell you it's worth the registration fee.
the name has a KEYWORD and the keyword counts. The keyword is also preceded by a word which suits it so its definitely worth some dough. I would say, high xx$ or 500$ for a stockings company