soulalchemie

If you're talking about buying from user shops, you might want to.
Although, the prices vary throughout the different servers.
There are different item sets that give you bonuses.
After the first piece is equipped, the following pieces will give you bonuses.
The more pieces of the set you equip, the more bonuses you get.
Before V.10, I believe, FlyFFers called these sets "greens" because they had green names.

However, I do believe that they removed the green name if the set is under lvl 60.
You're going to want to remember which set/weapon gives bonuses, according to your lvl and job.

I could list them all here, but, frankly, I don't want to. :P


If you were talking about Cash Shop, then, no.
Most Cash Shop items are all for show.
HOWEVER
There are items that may be necessary to level up after you've reached a considerate level.
However, it's not impossible to level without CS items.

__________________