Lab Mix and Pitbull Rehoming (Kingman)

I have two dogs that need to be rehomed SEPARATELY.
The Pitbull needs to be an only pet.
He’s great with people and listens well, but he is aggressive toward other dogs.
He is under a year old and fixed.
The second dog is a big lab mix (not sure with what).
He is also under a year and fixed with shots.
He is great with other dogs and cats.
The only thing is he gets scared easily so must be introduced to other dogs slowly.
Both dogs are crate trained and potty trained.
I’m only asking for a small rehoming fee ($40) for each dog to make sure they go to a good home.