Microsoft Publisher can be purchased for $170 for the full version at places like staples, or it comes with Microsoft Office Small Business Edition, which includes Microsoft Office Word 2007, Microsoft Office Excel 2007, Microsoft Office PowerPoint 2007, Microsoft Office Outlook 2007 with Business Contact Manager, Microsoft Office Accounting Express 2008, and Microsoft Office Publisher 2007. I've seen this on Amazon.com for around $300, a good price (about $150-250 off regular price), depending on where you might find it locally (like Staples). If you are going to buy a new computer, some companies like Dell will offer it as a software option at a lower price than if you purchase it separately elsewhere.
To my knowledge, Open Office doesn't have a similar capability. It has the basic word, spreadsheet, presentation and draw capability, and thai't about it.