The notebook market is a growing one; only a few years ago, the market for notebooks, in terms of units sold, passed the sales rate for desktop machines; one of the industry leaders in notebooks, and certainly the trendsetter in design, is Apple Incorporated, makers of the MacBook and MacBook Pro lines of desktop computers. Macintoshes are elegant machines, with industry leading user interfaces and design elements, but they also command a premium price on the market, especially in their portable configuration. Fortunately, there is a market for refurbished Mac notebooks, and a thriving one, that will let you save money on buying refurbished Macs.
If you have concerns about buying refurbished Macs, put them to rest. Refurbished Macs (notebooks or desktops) are usually 'store returns'. Someone bought the notebook, set it up, found it was not for them, and returned it. Many of them were returned by people who had them on leases or a payment plan, and decided to upgrade. These machines get taken back into the shop and are extensively tested; in most cases, the hard drives are removed, overwritten, and imaged with a fresh installation of the operating system, while all other hardware questions are answered, and sometimes upgraded.
This is similar to the refurbishment process used for any other piece of consumer electronics gear. The item gets returned to the manufacturer, usually as part of a warranty replacement, it will be checked for defective components, and if it can be restored to salable condition, it is then offered for sale as a refurbished item.
Now, there are a few drawbacks on buying a Refurbished Mac " the warranty coverage isn't quite as sound, though you can still buy an extended warranty after you save money on buying refurbished Mac. The computer may have a few physical defects, such as a scratched case, or a scratched power brick. That being said, it is still a Mac, it is still running OS X, the best consumer desktop operating system in the world, and it's nearly immune to viruses and malware. You are also unlikely to get your hands on the latest Mac notebook models as refurbished items.
All that said, saving money on a refurbished Mac can be a great investment; it is a good way to try out the MacOS and the hardware without paying the premium Apple charges for it, or to buy a Macintosh notebook for a student heading off to college, or to buy a second one for use around the house. Macintosh notebooks are generally high-end designs when they are released, which means that a MacBook is still an effective piece of computer hardware, even a year or two later.