Target.com has a really nice collection of running gear called the Champion brand. It is really quite cheap but really good. Great for those on a small budget.
You will find your best bet online. Try taking a look at the major online clothing stores and search for running wear on them. You can check out amazon too.
You can purchase some cute running wear online at burlington coat factory, JcPenney, Fashion Bug, Nike, Footlocker for Women and there are many other online stores.
To find out if cheap running gear is worth the trade-off in quality, 10 editors went to big-box stores and online to dress from head to toe for less than $100.
Cheap jeans for boys can be purchased online from Old Navy, Ebay, DH Gate, 10Dollar Mall, Common Sense Wear, ASOS, Kids&Jeans, Carters and Shop Style.
You can buy running wear for your son online from most mass merchansiers such as WalMart and Target for everyday low prices.
Since I do not know your running level. I can just tell you a discount place I found online was runnersworld.com also amazon.com usually has a lot of good deals.
If you are looking to purchase winter running pants, there are a number of options available for you to purchase them. You can try your local stores such as Dick's Sporting Goods, Target, Wal-Mart, or Kohl's. They are also available online at Impact Fitness Wear, Amazon and EBay.
You can purchase it online, or at Lowes or Rebel Sport.
You can get cheap mens running shorts that are good from adidas, zappos, team sports wear, and amazon. Kohls also has good running shorts and you can usally find a deal on them. Hopefully this helped.
There are many places to purchase different types of eye wear online. Eyebuydirect, glassesusa, 39dollarglasses, and shop411 are just a few sites you can choose from.
Rei actually has these bean boots for women. They are a nice pair with a great comforable feel and very stylish. You can wear them even casually on a regular day.
You can purchase Cherokee work wear for men online from stores such as JCPenny. Alternatively, you can purchase these items from websites such as AllHeart.