I feel that mute item prices diff big from time by time. For example few weeks back magic 40s sold vs 4-5 fg each. Now you cant even get them sold vs 1.5 fg? And its still faster mute event. Lvl 55s magic is like 34fg all time. Drops abit sometimes to 30-32.
I've been buying 40s for some time now, even before I was able to mute them.
The prices we had for a short time a few weeks ago were definitely an exception. I can't remember the last time you had to pay so much for Magical 40s.
LvL 50 Magicals sell for around this price (Bigheaded has created a very appropriate sheet for this).