My husband is a carpenter and says the seller probably has a little over $200 (maybe $300 by California prices) in materials on these coops. The only pressure treated part on the coop is the bottom sill. My husband said that the bottom sill may be there forever but the rest of the wood would probably need replacing about 3 years down the road (especially in our humid area of Texas).
I also noticed that if you were to raise chicks in it, you would need to add a smaller meshed wire around the bottom, at least, to keep the babies from popping in and out of the enclosure.
But 5 x 5 isn't very big; only 25 sq.ft.
But they sure do look nice!