I'm wondering what a Red Jewel Fragment is worth; it is used for one of the Katovic Questlines, a pre-requisite to get Selva Norte.
According to Wikisword, the area boss that drops this spawns every 5 hours, with a drop rate of only 5%.
There are none in the market, so I can't compare. Does anyone have any idea on how much this may be worth?

Thanks for any positive input.