Is dark ruins hard? My uberuntwinked MP was able to solo it prior to level 170. (Admittedly it took me 4 attempts at the final boss) - still ...
I plan to boost my Keeper to 199 (just so my other characters don't spend all day waiting, because people insist on having a keeper for 12-man). I already have a froob account full of buffers, had 2500+ tokens (more like 5k+, but that is beside the point) on my two main characters (before the advent of dailies) - so other than that one purchase, the store will get nothing from me.
I won't buy XP boosts - I am perfectly happy leveling through missions and quests (no hecks kthxbai); and however long it takes is fine by me. If they sell a social BOC that is also fine by me (personally I think they are fugly - also besides the point). As the measure of my enjoyment is what I have accomplished - not what someone else has done.
My only real complaint is that daily's bork the hell out of research (I need to set my alts to 100% MUCH earlier).