You can buy tennis sports apparel at the following stores in your area Wal-Mart or Best buy or Sears . Or you can checkout the following sites online that I found for you to look at www.tennis-warehouse.com/ , www.sportsauthority.com
You can buy golf apparel from a store which specialises in golf equipment. Some golf courses also sell a small range of apparel and also sports stores will stock a small range of equipment.
There is quite a few places online that sell children's sports apparel. One of the better places is Zappos. They do a great range of sports clothing, shoes and accessories. They also have free shipping.
Well really the cost of cycling apparel with differ with where you want to buy it from. Some stores may cost more that others. One website called http://www.competitivecyclist.com/men-s-apparel/arm-knee-legwarmers.367.html has lots of apparel for you to look at.
Mylocker.net, wholesalesports.com/, branders.com, are the three that I have seen for bulk sports apparel. If you are just going for t-shirts I would try a local place and save on the shipping.
At the American Apparel store.
adidas lives and breathes sports, creating high-performance footwear and apparel designed to keep athletes on top of their game. State-of-the-art sports footwear, apparel and accessories, with over 3,500 products. cutt.ly/sjpY86X
One can buy ATV apparel at various retailers. One can buy ATV apparel online at retail websites such as MotoSport, Motorcycle Superstore, and DennisKirk.
One can buy a travel golf bag at the local sports equipment and sports apparel store. One can also buy travel golf bags online at eBay, Amazon and other golf-related online shops.
You can buy Rusell sweat pants at Essential Apparel, Russell Athletic, Sears, Amazon, Abercrombie, Macy's, Nextag, Sports Depot, Freelists, Ebrookes,Fashionforumz, Cubuffshop and Bar Stool Sports.
from primark cost £2 if you can afford it
Motion control running shoes can be purchased at most sports apparel stores. For example, Sports Authority and FinishLine have a variety of styles to choose from.