Cost Plus, Inc. Announces Webcast for its Second Annual Analyst’s Day

Oakland, CA – September 17, 2007 — Cost Plus, Inc. (NASDAQ: CPWM) announced today that its Executive Management team is hosting its second annual analyst day on Wednesday, September 19th at its Oakland, CA headquarters from approximately 9:00 am to 12:00 pm PT. All investors are invited to listen to a live webcast of the presentation which will be accessible through the Company’s corporate web site at http://www.worldmarket.com and http://phx.corporate-ir.net/phoenix.zhtml?p=irol-eventDetails&c=81988&eventID=1648749. The webcast will also be archived and available on the Company’s web site for two weeks following the live presentation.

Cost Plus, Inc. is a leading specialty retailer of casual home living and entertaining products. As of September 17, 2007, the Company operates 297 stores in 34 states.

Contact:
Jane Baughman
Cost Plus, Inc.
(510) 808-9119