The secret's been out for a long time now. Smart buyers know that Monoprice is the place to go for cables, adapters, and a ton more electronics at a fraction of the price of regular retailers. Their product quality is solid and their customer support is outstanding. You can spend hours chatting with their technical support team for free and they'll happily help you piece together every component of your home theater system or project. Visit Monorprice.com in Apartment Therapy's Marketplace.
Great For: HDMI and ethernet cables, TV and projector mounts, wall plates and adapters
Great For: CPUs, motherboards, RAM, HDDs, disc drives, fans, accessories
Sample Listings: ASUS 23.5" LED Monitor for $169.99 (promo code EMCXVWL22, Samsung 840 Pro Series 128GB SATA III SSD for $139 (promo code EMCXVWL82, XFX Core Edition 550W Power Supply for $39.99 (promo code EMCXVWL64 + mail-in-rebate)
Known for their audio cables and speaker components, Parts Express is another prime example of a great online resource for solid quality and fair pricing. Think of it as an online Radio Shack with random parts but fairly priced.
Great For: cables and speaker components
Amazon seems to be turning into the Google of online shopping. It's often the first place to go and with their numerous partnerships their breadth of products is huge. They simply have everything you could want to buy online. It's a great baseline to compare pricing and with free shipping deals such as Amazon Prime and Super Saver Shipping, it makes for a painless and easy transaction.
Great For: Comparing prices, finding anything you need
If you don't mind pre-owned tech, Craigslist is a goldmine of great finds. You can usually snag some great tech at a fraction of the original cost. Be wary of scams and "too good to be true" deals and keep in mind that travel time and gas costs money too. Craigslist is also the place to spot fresh iProducts if you're not looking to jump on a contract.
Great For: Great pre-owned deals, tech at a fraction of the cost
Sample Listings: Apple 23" Cinema Display (aluminum) for $250 (DC)
(Images: Gregory Han; Shutterstock/Studio_G)