5-10 dollars per level is cheap, considering the 1-50 boost is $60. I wouldn't mind paying the extra 50 dollars in some cases to skip the 50-60 grind. Obviously I wouldn't do it all the time, as I actually enjoy the leveling process, but wouldn't hurt to have the option. (i prob would never use it to skip a full 10 levels, but I like the option if I so choose.)