I know it's just tribble, but I have basically bound 160 C-points to STO and sold them for 300 dilithium each point in the store. The average cost I saw was between 350 and 360 dilithium per C-point.
Strangely enuff, I couldn't find my own offer anywhere, even listing after the cheapest conversion price. Why is that? Is that normal? My 160 points are gone, and nobody bought them so far, which is odd, since my offer was by far the cheapest.