If you need computer or TV cables, don't head to the store for them. Chances are you'll be paying much more than you need to.
The average price of an HDMI cable at a retail store is $30, while some establishments charge as much as $100. However, if you look online you can find them for $5.79. If you're worried about the brand or quality, tech publications say that there's no meaningful difference between HDMI cables. They all do the same thing.
In this case, you shouldn't be paying any more than $10 for a basic 6-foot cable. Make sure to shop online at sites like Amazon and Newegg.com, and if you want to save even more, buy in multiples. For instance, a two-pack of cables on Amazon cost $9.99, which makes your per-cable cost less than $5.
Just be careful of shipping costs when you shop online. The higher they are, the more they'll eat in your savings. Also, if you're buying a new TV or computer, see if the retailer will throw in HDMI cables for free. Otherwise, stay away from the brick-and-mortar stores when shopping for this item.