Yeah, split boots aren't much better than a leaking/broken/cracked boot.... The problem today is that a typical boot kit costs about 30- 40% or so of an entire axle replacement.... In the dealership, about 50% of the axles I took apart to replace the boot had worn or pitted joints, ( I actually used to inspect the joint and completely repack it with new grease...) so it didn't make sense to replace the boot. The inexpensive axles from Asia have made it uneconomical to replace just the outer cv boot. Complete axles, depending upon application, can be purchased for as low as $40 USD around the Bay Area... why would you want to replace a boot kit for $20-30 when the entire axle can be bought for $50 or so?