Bought this to build a studio/shed for my honey. Built it on pedestals with a treated wood structural frame. Went together fine, but could have used more spare side boards, as the number warped more than the spares supplied.
Added 1/2" foam board insulation over roof T&G, with 1/2" beaver-board panels, then shingles.
Had some water leaks at door slats and wall corner joints. Disassembled the door to caulk, then applied coats of polyurethane to totally seal. Caulked exterior of wall corners, then sealed stringers at corners. The exterior stringers eliminated the need for the interior ones (ugly).
Overall I'd buy it again. It does require an assembler with above average construction skills.