is there a compiled list somewhere with the values of the runes?
In trade I only see ones worth blessings, but I'm sure Sif moon fire have values, at least for a few FG each.

I'd consider those runes in lower demand (Fire, Ice, Sif, etc.) to be worth around a Loki or less. Loki usually trades 3 Loki per blessing in trade channel so I'd think you can get those kinds of runes for 100fg or less. All those runes I'd gladly sell at 100fg a pop (Loki included).

Moon rune is a bit more though. You can sometimes get a blessing for them.