The implication being that it "jackhammers" right through the hardpan or compacted soil in your plots...just like all other daikon radish will. If the cost is right, buy it, just know what it is and what to expect from it.
I agree - look at what other radish will cost you and do NOT pay a premium for this "jackhammer" brand. They are all pretty much the same thing with only marketing/branding being the difference.