autozone has tie rod ends going for:
outers 25.99 each
inners 21.49 each
you need 2 of each to replace all the ends.
thats the 'duralast' brand, the 'valucraft' is about 10 bones each.
and looking at the part numbers, I would say the difference is the part number (one letter) and the warranty you get.
I have noticed that about AZ. most of the time the valuecraft part is the same as the Duralast part, just not as much warranty. I have even had a clerk substitute the more expensive one 'cause the cheapy was outta stock and give me the cheapy price.