I did my whole house with it about 3 years ago. Still have it in the kitchen and entry way. It was super easy to apply, but the prep is the hardest part. It's just like any kind of staining or painting, it's all in the prep work. I could have done a little better job on the prep, so mine didn't turn out as well as my wife that it should have. However I'm happy with it and like it alot. It's got a rough look to it. It does wear in high traffic areas so make sure you put a real good sealer on it. Also if you change your mind and want to go with ceramic tile you will have to sand all the stain off, the moter you use for tile won't stick to it. In our living room and 2 of our bedrooms we just laid carpert over it. I think between the stain itself and sealer we spent under 400 bucks, but like I said this was 3 years ago. I'm sure it's probably gone up since it has become more popular recently.
Here is a link to the site of what I used.
http://www.kemiko.com/