We are overall very happy with the purchase.  It took my husband about two weeks to put it together on his own, working 2-3 hours each evening.  Our only complaint was some of the boards used had minor damage to them, but nothing very significant.  Also, there are inked marks on each piece which correlates to the directions (e.g., "E4") that is somewhat visible, but I imagine this will wear off with rain/weathering.  All of the pieces were there and we didn't have any trouble with the directions.  It seems pretty sturdy.  My almost three-year-old loves it and can't wait to host her buddies for her birthday party!!