Try any place that sells patio furniture--thrift stores, department stores, home improvement stores. Overstock.com has quite the selection on wicker furniture: http://www.overstock.com/Home-Garden/Patio-Furniture/Wicker,/material,/714/cat.html?sort=Top+Sellers Good luck!
A wicker patio dining set will be perfect for your back deck or patio. You just need to remember not to put it too close to the pool. If the wicker material gets wet, it could be ruined. You are much better off to use metal or plastic sets if you are going to be close to the water. These are much more resilient and they will not break down from the excess moisture.
There are two sites I would recommend. Patiofurnitureusa.com has an all weather four seat wicker set. Nextag.com has a seven piece wicker swivel chair dining package. They also have a patio wicker furniture nine piece deep seating set and much more.
You can buy what you need from: http://www.sears.com/outdoor-living-patio-furniture-dining-sets/s-1024115?intShip=5 and http://www.nextag.com/dining-high-patio-set/stores-html
There are lots of online sites that offer outdoor wicker dining sets. These include www.patioproductions.com, www.overstock.com, and www.patiofurnitureusa.com
The best wicker patio set I have come across was at Sears they have a nice variety. Sears will help you find exactly what you need with great prices and wonderful costumer service.
Polyethylene wicker is the new choice in wicker patio sets. This type of wicker requires no maintenance and will not fade in the sun, crack in the cold, or rust.
The items that are included in a patio dining set depend on what dining set is purchased. The standard patio dining set will include a table and chairs.
Americanrattan.com is a website that specializes in wicker patio furniture sets. they have an array of matching wicker sets and they are having a 20% off sale going on right now.
You can buy an outdoor furniture dining set at www.target.com/, www1.macys.com/.../montclair-outdoor-patio-furniture-dining-sets-p,and www.sears.com/outdoor-living-patio-furniture/c-1024038.
Patio Furniture USA is a great place to start. http://www.patiofurnitureusa.com/patio-dining-sets/8-person/818+5674+4294938355.cfm Wicker Central has a nice selection as well. It's not hard to purchase that dining set online.
Nothing says classic elegance like an outdoor wicker patio set, but you should buy with a view toward longevity. Over time, natural wicker tends to develop mold and rot, if it is exposed to frequent moisture. Wicker also tends to dry out and fade, if it is left under the sun for long periods. To combat the damaging effects of moisture and ultraviolet light, select a wicker patio set that comes with anti-fungal and UV protection. If you want a low-maintenance patio set, opt for a resin wicker patio set instead.
You can purchase canvas pillows for a wicker patio set at wickerliving.com a store that specializes in these types of items and has other things for patio sets