check home depot for fans too. a duct booster moves way more air than a comp fan and its about the same price. unless you already got them. comp fans prob. don't move more than 20-30 cfm where as duct boosters move like 150cfm. 20-30 cfm @ $8 + wiring which is at least $2 each. to move 150cfm you would need 6 of em if they move 25cfm that 6 x $10 ($8+$2) = $60. I bought my booster for $25 plus they sell the plus that you can wire straight to the fan to plug em into the wall for like $9. you could get almost two actual fans for the same price.