Quest Number 4 I can understand your gripe. I get annoyed too when I have to pay for my mission completions. Companies pay gamekit to advertise their game, and games end goal is to make money to be sustainable. I personally stick to the missions that don't require me to pay and skip them when the gamekit points are not worth it.
Ostatnio onlineyesterday, 20:30
Is there any..? You just gotta keep doing quests. Especially if they're worth a lot of XP they are worth doing. Q3 isn't worth it for the pts. Just let it pass and do the next quest if you have to (Which doesn't require diamonds)