At DirectBuy, you can make purchases on any number of electronics, home remodeling materials, and other items for the home.
Once you become a member, you are able to make purchases directly from the manufacturer (practically), paying the wholesale price plus a processing fee.
Direct Buy has a high-pressure membership recruitment process. They lure prospective members into the showroom and show them how much they can save on different services. At the end of the presentation, they extend you an offer to join the club. However, this offer is a one-time-only deal once they've shown you confidential pricing information. The recruitment process can best be compared to a timeshare purchase.
DirectBuy is in many ways well worth the membership fee which is somewhere between $3,000 and $5,000, depending upon location. In addition to the membership fee, there is also a yearly renewal fee. Even with all of the money that it costs to be a DirectBuy member, most members would agree that if you are planning to build, remodel, or furnish a home, you will quickly recoup your costs.
Of course, there are detractors as well. For one, the iVillage Gardenweb has a thread that discusses people's DirectBuy experiences. They are overwhelmingly negative.