To answer a few questions i am getting often
The coops is not presure treated, but is stained with a wood presertive, i again coated mine when i got it.
Shipping is included in the price
There is not a lock on the nest box lid, i put a lock on mine to keep the chickens safe.
Yes the floor is slatted, the poo falls through, gret in the summer, but in the wint it needs to be covered, i use a thick rubber on the floor covered with shavings. Aslo use a few nails to nail down the floor, this keeps out predators.
Can mice get in since the floor is slatted and eat all your food.
I have not had a mouse problem, but i would imagine they could get in, use a hanging feeder and they cant get to the food.