WTF do you need $270 (27 players * $10 rake) for to run the tourney? If you need start-ups costs covered (e.g., tables and chips), it may be OK to ask for some initial contribution. But not every week. And $270 every week is just insane. No way I would pay that because the only person making regular money in the tourney is the host. Buying enough pizza for 27 costs less than $100 (and you're not even doing that!). How can you justify $270?

Plus, taking a rake may be illegal where you live.