Owners normally want to purchase a replacement SFP or a new one from a brand name OEM website, which is fine, but the cost of the product tends to be a bit bigger, while a substitute can cost 50-100 dollars less. These alternatives will help you save a considerable amount of money, but here's the best aspect: they do everything the OEM can do without the bigger investment.
It's better for you to order from a cheaper manufacturer that makes the same item than continue to shell out 50, 60, even 100 dollars extra for an SFP that operates the same.
When folks hear the word 'used,' some tend to feel as if they're getting a lesser quality product because it had a prior owner, but don't buy into this common misconception. Say you wind up buying a Cisco compatible GLC-T; that does not mean the item is inferior to a new module, especially since Cisco makes reliable transceivers that come with the satisfaction of a long shelf life. Sure, ordering a used item may seem like a huge risk, but with most merchants offering customers a warranty and a discounted rate on these modules, it seems very difficult to turn down a refurbished module.
Buy a Warranty
Okay, so the topic of the article is to help people discover ways to save money on devices, but a warranty is an investment that later down the line will pay off huge dividends to the investor. Okay, so say you end up with the newest Cisco compatible SFP modules for your systems, but some of them break down after a year because of a ruined lens.
Not only is the lens not working, but the manufacturer's warranty has expired, so now to replace the product you have to spend an extra 300-400 dollars. If you would have purchased an extra warranty, you could have saved yourself the trouble of having to replace the broken down equipment. Remember, buying a warranty is an investment for the safety of your items, which you should be concerned with to save on costs down the road.