I went to see the DirectBuy presentation this weekend.
Here's the short story - you can buy stuff at wholesale cost, but it will cost you a LOT of money up front.
To join their club, you pay them $5000 ($4971 iirc) for the first two years, then $190 after that for the next eight years. The deals they have are incredible, but I calculated that I'd have to spend right at about $26000 with them over the next 10 years (not including the membership charges of $6520) to just break even.
I wasn't willing to do that. If I had rental properties or something similar that I had to keep furnished, this would be an awesome thing to do. But, for a young couple expecting a child soon and not planning on decorating to the 9's in their home, it just didn't make sense.