Rake Question (Nanos-ish)

[Doc7]

I was playing .05/.10 for several thousand hands (poor guy i only had 30 bucks to deposit, following the latest Bankroll building post, I think by Wookie?)

Anyway I got up to a 98% confidence interval winning player at that limit, turned by 30 bucks into around 90ish. Since then I've bumped up to .10/.20, but I notice on the pokerstars rake structure they take .05 out of every buck for this limit, which is the same rake they have at .25/.50

So far over 600 hands I've paid 2.25, so thats almost 2 BB/100 hands...is it stupid to play at this level (only considering the rake) or is that typical? Anyone playing .25/.50 or .50/1 want to fire up PT and see what their BB/100 rake is?