Price Check on Secret Rare Energies?

[Valkyria]

What are the approximate values of the SR basic energies: water, fire, grass, electric, fairy, darkness, psychic and fighting? They don't seem to be traded a lot. Also, does anyone know the value of the foil basic energies from Call of Legends?

[CorruptedCoffee]

I traded 2 grass over the past 2 weeks. One went for 10 packs within a few hours, the other sat for a few days and I lowered it day by day - sold at 8 packs. Can't comment on the others! GL!