I have no idea how to spot fake lifeproof...not yet
Perhaps I should get one and compare?

Anything lower than retail price should be questioned.
Also I cannot guarantee the integrity of the replica cases.
The main difference is that you have my after-sale support which is fully backed by Lifeproof officially in case any case any manufacture defects are found.

I have had random 'lifeproof' users come to me for help when their case failed.
Then when they wanna claim warranty, the seller conveniently disappeared.
I hope none of this ever happens to my customers.