I don't like the look of the crashbar mounted ones, so have a set mounted on the frame, which are adjustable for leg reach. Work a treat, comfortable and look neat. Cost? You own a Harley - ain't nuttin' cheap, so get yer cash out!
IMT Jack Knife (could be spelled differently) - really good and amazing quality. You need to take an angle grinder to your floor boards though, but worth it.
eh 39 bucks h=d pegs and hardware, mounted hallway up the crash bar.....function over looks at this point. (when folded up the unfinished underside is shown),rubber inserted on a chrome peg.