Ending today, Newegg offers the Cooler Master Elite 110 Mini-ITX Case for $34.99. Redeem this $15 mail-in rebate to cut it to $19.99. With free shipping, that's $2 under our mention from a month ago and the lowest price we've seen. (It's a current low by $15.) It supports mini-ITX motherboards and features three internal 3.5" drive bays, a 120mm fan, two 80mm fan mounts, and dual USB 3.0 ports.