This is the place where I will eat every-time I can. It is cheap and the food is apparently nice.
They have buffets for 10000 kips which are in the street. They also sell all kind of products.
Obviously, like every place in Laos, to buy items; sellers will tell you a price which has to be negotiated 2 to 3 times lower. It is also possible to pay in Kip or Bahts.