The general market price is basically 60,000 to 120,000 per meter, but there is a company in Zhenjiang, Jiangsu that sells it for more than 30,000 per meter. It seems that the invention patent belongs to their company. I will share the link with you/v_show /id_XMjM4NDIzNzAw.html
One of their presentations at Guangdong TV Station. Yes, their name is Tianli Technology, and there is a phone number on the video.
Hope this helps.