How much would this old knife I have cost?

When I was a kid, I used to collect knives. Relatives would buy me various knives and I’d just store them in my drawer. Eventually I stopped and sometimes mentioned having done that in conversation. Now, an acquaintance of mine is interested in buying this knife from me. I’d gladly sell it to him, but I know nothing about knives and what they cost. I tried searching up the brand here on the blade, Jin Teng, but found nothing. Could y’all help me out?

by Educational-Car-8962