Yong Mao Yuan Ji or Yong Mao Yuan first appeared in Jiaqing period. It is a trademark on porcelain in the Qing dynasty and a merchant brand. I don't know what porcelain you're talking about, whether it's plates, bottles or other shapes. Generally, a complete plate should be between several thousand yuan. If it is porcelain of other shapes, it is not equal to 10 thousand yuan. I'd better give you a picture or a porcelain model so that I can give you an estimate.