Each weapon has it's own purpose. Discord, arsenic, druidic staff, and vampire dagger are meant for their cheapness and useful ability (scrambling, healing, and poison). Weapons like trident, pulverizer, fahrenheit, eternity, and lobotomizer are generally middle cost weapons which are more useful because of their ability rather than damage and cost effectiveness. Titan and Morning glory are two of the more expensive weapons, but they also deal the most damage. You have to remember that both are also in a way 'protected' as titan allows it to bypass shields and morning glory is untargettable. Giving them 8 atk each is already a pretty good deal for just 5 quanta. The other issue is animate weapon. Flying titans and flying morning glories are extremely powerful, because a flying glory is an 8|4 immortal creature while a titan is equally hard to get rid of, being 8|50 as well as having momentum.