In 22 mystery boxes I got 700k+ direct xp from phoenix lamps bubbling lamps regular lamps and smouldering lamps. You can get alot more large lamps from currency event boxes then on th which defeats the purpose of buying keys. I also got alot of bonus xp too but I didn't keep track of how much. Currency events give more xp then treasure hunter...The brightest ideas are the most undervalued.
As stated above, value is highly subjective. To me, the tokens had much more value using them at the dungeoneering hole, as I'm not 120 yet. It all depends on your personal goals and expectations.When it rains, look for rainbows.