please help me understand if i have these calculations right.

if i were to buy hashpower of 0.1 (that's 100mh/s correct?) and spend 5btc at a price of 5btc/day

i would get 100mh/s for 24 hours, is that correct?

also, i would essentially be bidding against other people that are purchasing hash power right? so the higher the price i list, the most likely my offer will get picked up? it looks like there is a wide range of bids, would a bid of say 2.5 btc/day get picked up? it's hard to tell it looks like every bid is being picked up right now.