I bought all of my gear from More Beer. I've been kegging for a while, but for this project I went with all new stuff (except the kegs). The tower and taps were technically used, but only barely so; the whole assembly looked like it was straight from the factory.
I made a kegerator very similar to this one this weekend. The two differences I see are that I used a smaller piece of wood (scrap I had on hand), and I located the tower closer to the center of the top. Very easy project!