I have a Kaigelu 307 roller pen. It has a black body and gold trim. I have tried searching the web and Ebay for an idea as to how much these pens normally cost, however, have not found a single match, apart from a page in Chinese (or similar) language, which I do not understand.
This led me to think that if it is not on the web, it must be rare. If anyone knows of this pen or if it is worth anything, or could suggest any reliable online sites where I could obtain a rough, free estimate of what it might be worth, I would be very grateful for any information.