Thank you for contacting Mearto. This is a Japanese vase in the satsuma ware style. Satsuma ware got its name from the region in which it was produced. The name Kinkozan is one of the famous Satsuma makers. This vase is an imitation of an authentic Kinkozan work. I have included a link below to a real Kinkozan vase, showing the seal at the bottom.
The vase is from the 20th century. Many vases in this style were produced for export. The artist uses gold, heavy outlines and bright colors. This kind of vase is popular, but prices vary. I’ve added links below to a few past sales. Some are very low, but it depends on the auction house, buyer, and the piece. The Fair Market Value of this vase, based on comparisons and demand, is between $30 and $50.

Authentic Kinkozan , with seal mark
https://www.sothebys.com/en/buy/auction/2020/fine-japanese-art/a-kinkozan-satsuma-vase-signed-kinkozan-zo-and

$40 for 3 vases
https://www.liveauctioneers.com/item/9945593_10215-3-assorted-japanese-satsuma-vases-20th-c-tal

$100 for 2 vases
https://www.liveauctioneers.com/item/69145475_pair-of-companion-japanese-satsuma-vases

$60 for 1 vase
https://www.liveauctioneers.com/item/63989264_japanese-satsuma-style-parcel-gilt-vase

$50 for 2 vases
https://www.liveauctioneers.com/item/78056863_2-japanese-satsuma-painted-vaseshttps://www.liveauctioneers.com/item/78056863_2-japanese-satsuma-painted-vases