Heh yeah, it's just not worth training normally till you get at least level 60. The xp per dungeon is pitiful. Tears and peng points all the way. :P I also used the 400k xp from WGS when I got to 65.
Wasted tokens? No, I used my time effectively so that I can gain tokens at a faster rate when I want to gain them later. Why play a half hour dungeon at level 30 to gain a measly 300 tokens?