A professionally honed straight razor, a leather strop, and a strip of balsa wood for use when the strop alone just won't do.
I admit I was a little put off by the method the site uses for purchases but decided to give it a shot anyway after checking the reviews of the site elsewhere (he has many linked in his 'about us' section.) I'm very glad I did and look forward to purchasing from him again.
PS for those of you looking to buy this as an economic way to get into straight razor shaving you'll also need a brush, bowl, and soap. A Van Der Hagen kit with just that can be bought on amazon and many other places for about ten bucks.