Thought I help update the Fantasian price checks. ;o
Sakurako Hairpin - 300-400m +/- (might be lower, the lowest offer I've seen on these are 200m)
Hibiscus Accessory - 1b +/-
Hyena Hairband - 800m - 1b +/-?
Tacky/Primrose Hoodie - 250-300m
Lv.40 Gift Box - 4 - 5m
Altiverse Crimson Box - 20m+
That's what I've seen trending, I could be wrong tho.