Costco Adirondack Chairs In Store. Member apr 7, 2009 575 posts 358 upvotes. 2 adirondack chairs and 1 side table;Costco adirondack chairs 129 each (gray is on backorder from www.pinterest.comThey are made with recycled plastic so no splinters, chipping paint and trying to protect from the elements. Rated 4.6 out of 5 stars based on 64 reviews. Member apr 7,...