insurance gastric bypass

Does anyone know what it costs to have gastric bypass surgery without the help of insurance?
What you get for $ 20,000? What do you know you about "lapband"? I think that is what is called.
It depends on what type of bypass procedure gastic (there are several), and where is performed. Costs range from $ 20k to 50K.
What insurance companies want from Gastric Bypass, Gastric Sleeve, and Lap Band patients.