Well there are so many garden seats available for a wide variety of prices. I personally think that the quality of a garden seat doesn't vary much. The biggest decision to deal with is how many cutouts you would like on your stool. This is such a popular item right now, you cannot go wrong with adding this to your decor. Here are the variety of options available.
Neiman Marcus Garden Seat = $199.
Pottery Barn Ceramic Garden Stool = $159.
Ballard Designs Garden Seat = $139.
Overstock's White Chinese Porcelain Stool = $83.99
