Cost Plus, Inc. Announces New Reporting Date for Fourth Quarter and Fiscal Year 2006 Financial Results and Investor Conference Call

OAKLAND, Calif. — April 30, 2007 — Cost Plus, Inc. (Nasdaq: CPWM) announced today that it will release its fourth quarter and fiscal year 2006 results on Thursday, May 3, 2007, after the market close, and will host a conference call for investors at 1:30 p.m. PT that day. Participating in the call will be Barry Feld, President and Chief Executive Officer, and Tom Willardson, Chief Financial Officer.

The conference call will be in a “listen-only” mode for all participants other than the sell-side and buy-side investment professionals who regularly follow the Company. The toll-free phone number for the call is 800-901-5231 and the access code is 39184141. Callers should dial in approximately 15 minutes prior to the scheduled start time. A telephonic replay will be available at 888-286-8010, Access Code: 87237570, from 4:30 p.m. PT Thursday May 3, 2007 to 4:30 p.m. PT on Thursday, May 10, 2007. Investors may also access the live call or the replay over the internet at www.streetevents.com; www.fulldisclosure.com and www.worldmarket.com. The replay will be available approximately two hours after the live call concludes.

About Cost Plus World Market
Cost Plus, Inc. is a leading specialty retailer of casual home living and entertaining products. As of February 3, 2007, the Company operated 287 stores in 34 states compared to 267 stores in 34 states as of January 28, 2006.

Contact:
Cost Plus, Inc.
Tom Willardson
(510) 808-9119