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however, if i directly bought in, i'm definitely gambooling it up, because if dropping a $10k buyin is not a big deal for me, neither is winning $11k.

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I don't think so... 11k means something to everybody even the pros. If you double up, you are not guaranteed to make it past 50 more people so you don't win a lot of EV, however by folding you are 100% sure to make at least 11k. It's a fold.