Foot Locker, Dick's Sporting Goods and Nike retail stores sell Carmelo Anthony shoes as well as online stores such as Amazon, Finish Line and Shoebacca.
Only at Boombah.com there are currently no stores that sell the shoes.
There are many stores that offer discounts on Jones shoes currently. You can try your local shoe store, a large clothing store, or a large department store such as Sears.
There are a wide variety of online stores which sell shoes that are currently in style. The online sites for Zappos, DSW, Eastbay, and Amazon, for example, sell such shoes.
Adidas kids shoes can be purchased at most shoe stores, in the children's sections. Sporting Goods stores are more likely to carry Adidas shoes, but it is advisable to call ahead to make sure that they currently have the right size in stock.
The Mizuno Wave Elixir 3 running shoes are now considered by many as an "endangered" shoe and is currently not available at any online stores to my knowledge.
You should have very good luck in finding the Nike Pegasus 27 black shoes at many sports stores (who can also bring the shoes in if they are not currently on hand).
As you specify comfy shoes it will be important to try the shoes on properly before you buy. If you have standard width feet then it might be a case of visiting the shoe stores and department stores in your locality until you find exactly what you want. If you require a less common shoe size then you may have to travel further to a specialist store.
Sears sell Thom McAn shoes in Oklahoma. There are currently in excess of 30 Sears stores across the state of Oklahoma, as of August, 2014.
The Journey store sells designer shoes for all ages and genders. They routinely have sales on shoes depicting whatever popular movie is currently in theaters. At the moment, this would be Iron Man 3.
Many online stores sell running shoes cheaper than in stores and will have sales at different times. I recommend checking a shopping comparison site such as Nextag to see where the best deals are currently. However, it is best to go to a store and try on shoes to find which ones suit your feet best.
Brooks Ghost running shoes are currently available for purchase in person at The Running Room. They carry the Ghost 4s and will likely be coming out with Ghost 5 later this year.
Urban Outfitters currently sells the Dr. Martens 1460 Boots for $115 on their website. These shoes are not currently available in their stores. The 1460 boots are currently available in 3 colors.