Don't know if there's a Kroger near you, but they sell single cryopacked ribs.
For that matter, ANY single crypacked ribs allow you to see the bones in each rack. Usually by sorting through what's in the case you can find 3 or 4 racks that are nice and straight.
Even then, we sometimes need to be "creative" on how we slice up the individual bones for the box. If you're good you can "fake it" pretty well. As Ron said, the presentation in the box may LOOK like they're perfectly straight rib bones, but a good rib slicer can fool you. Rarely do we see a perfect rack of ribs where all the bones are perfectly spaced and straight. They almost always "crawl" to one side as you go down the rack. You just have to know how to work around that.
Straight or not, the best tasting ribs always go in the box and more times than we'd like, the ugliest rack will taste the best, so you have to learn how to slice with some skill.