Mine were cracked too, and no noise or anything. I just got the boots and repacked, and it's been fine for the past 2 years. My mistake was I put a little too much grease back in, so watch out for how much you're using.
I received (2) quotes today around $700. Both places stated 4-5 hours of labor, almost $200 in parts. Seems a tad high and was expecting $400-$500 tops.
Replaced the passenger side last fall. Parts from pelican really reasonable
Two clamps, boot and grease.. $87.16 for independent to install.
Drivers side ok.
Found when I had a tech inspection done by the dealer. Dealer suggested
I not replace the boot but run it until the joint failed. $$$