This amazing tool sells for something like $9.99 and includes that much in blades and bits. The handle is pretty impressive, too. It is sturdy, holds the blades ok as long as you keep knocking the drywall dust out.Comes with a very handy belt-mountable case for the handle, the driver-adapter, and all your blades (the case accommodates 6 blades, and the handle uses standard sawzall blades -- I refilled my setup 3 or 4 times before I finally lost the tool -- and immediately bought a replacement!). The quick-change blade-lock makes this tool great for an electrician, cutting holes in drywall, plaster, lathe, baseboard each with different blades, all on the same job -- sometimes all for the same outlet location!More important than interchangeable blades is that the blade comes off to shrink the length of the tool (some hand-saws don't fold up).