Dallas. You should be able to get it cheap.
walmart
It would not be a good idea to buy cheap cases for your computer. Doing so may result in your computer getting broken or damaged, especially when in transit.
If you want to buy a cheap iPhone case then I want to suggest Gadgetzkart. They provide the best and premium quality iPhone cases at reasonable prices. So, if you want to buy an iPhone case for you any model of iPhone then, It is the best to Place for this.
Cheap, but effective laptop cases can be found on ebay.com as well as in stores like Wal-Mart, Best Buy, and Target. Also, other department stores carry many types of laptop cases that are very affordable.
Walmart
Try going to best buy first. If you cannot find a good cheap camera there then please go to Wal Mart of Target.
There are many places to find cheap phone cases on line, just do some research. You can try Amazon or Verizon. Although the prices on the phone cases might be low, make sure you get a good price on shipping as well.
Web sites will give you the most information the quickest so you can easily check them out and find what's available. The Dallas area also has many places where you can buy this.
You can buy an iPhone 3 case for cheap on eBay or amazon. They offer multiple cases that were used but are in great condition. Check out those sites today for good deals.
Buy a gallon of cheap stuff. test on small area.
A good place to find a cheap 1990's Ford Mustang in Dallas would be a used car lot. You can usually find good deals at such establishments. You can also try to check the local newspaper classified for cars.