TIP: 1st reroll costs 4, next costs 8, next 12, 16, 20
Thanks, those numbers were what I needed to know.
Simple, of course it is easy when we know how.
I am wondering if some events are getting a little complicated, not everyone wants to shout out questions in-game chat where not everyone knows the answers.
Personally I don't find Aion's events or any other tasks overly complicated. There are games that have way more complicated things, for example where you have to craft items in many different steps. The problem is rather the combination of everything being very expensive and no detailed info/guides. Those attributes are not bad in themselves. Sometimes it can be fun if the community has to figure things out alone. But if it's very expensive, involves RNG, and has players starving for basic items, then it becomes a struggle and is not fun at all.
Just take the Ultimate Katalam Reward Chest as an example. I have 35 Insignias of Experience which took me weeks to gather, and now I found out it's not even enough to reroll a single chest max times! If I tried it to find out the required numbers myself, I would lose days or weeks worth of progress! If things have to be this grindy and expensive, people need to be provided with info.
In summary: It's not too complicated, it's just too expensive to take risks.