Hello and thank you for the question. PAL uses a device made by MicroAire. Both techniques are similar in that tumescent fluid is first injected into the fat. This helps with blood loss, bruising, and postop pain. The difference is that PAL uses a motorized handle vs doing this the old fashioned way with manual hand held cannula. The difference is like an old fashioned saw vs an electric saw. The electric will be easier for the doctor and produces a more even and smooth result in my experience. Having said that, both are good techniques for BBL. The success depends on your underlying health, available fat, skin tightness and elasticity, and the size / shape of your buttocks. Remember that some of the fat that is transferred does not survive. Typically about 70% of the fat lasts long term. The cost will depend on how many areas of fat you are having liposuction performed. Average estimate will run 7000-10,000 approximately including anesthesia, surgery center and doctor fees. As always it is best to be healthy, no smoking, and to make sure any health care concerns you have are managed by your primary care doctor. Best to you