Happily, I just got one of mine --
10-foot Terry Jacka whip from eBay. It is originally from Western Stage Props pre-Indy, so it's really a Terry Jacka bullwhip, not specifically a Jacka "Indy" whip. (Only minor differences between his bullwhips and his KOTCS whips.) Been wanting a top notch bullwhip for 20 years. Until this came yesterday, I have had a David Morgan stock whip (18" handle) for about 20 years. Loved it, but wanted the bullwhip. I had been looking for either a Morgan, Winrich, Jacka, or Strain (as a fourth choice). The Jacka is beautiful, and heavier than I expected. I'll post some pics once I take them.
Now I'm on the hunt for an affordable MK VII bag, W&G of course. The quest continues.