Buffs are definitely not as big a deal as they were in EQ, and it's rare to see anyone asking for buffs, and I've never seen anyone charging for buffs. People frequently throw buffs around without even being asked; I can't count how many times I suddenly realised I had a buff of some sort on me. Buffs aren't *needed* like they are in EQ, either - I efficiently solo a 60 Warrior v. equal-level, non-elite mobs with no buffs and no potions used (and no real downtime, thanks to food & first aid). With a Greater Agility Potion and a Solid Sharpening Stone (+6 damage), I can solo a level 55 non-casting, named Elite without using a Healing potion.
Buffs are definitely nice, if there happens to be a buffing class around (Mage, Druid, Priest), but it's no big deal if I don't have them. The only time I *really* want buffs is in instances, and in that case, there's always a buffer along anyway. ;)