Buying used guitars online can be a challenge, but generally, it's fairly easy to spot a good deal. You can end up getting a huge discount on your musical merchandise. Buying online saves you money because it's extremely easy to find deals and compare guitar retailers. You have better selection, more choices, and more convinced when shopping for guitars for sale. Moreover, buying a used guitar can save you a lot of money as well. Typically, when someone sells a used guitar, they're not selling it because there's anything wrong with it. Usually, people sell their used musical products because they're either no longer interested in playing the guitar, or they wish to upgrade their own equipment. In cases such as these, you can fairly confidently assume that they're not selling a faulty product, but you also know they more likely than not need to sell it before they get their own. They no longer have a reason to keep it. Therefore, the used product is much, much cheaper than a brand new guitar, even if it's in mint condition.
When purchasing a used guitar or used guitar amplifier, make sure you check the condition of the instrument. If the buyer mentions something wrong with what you're buying, send him/her and email asking for clarification on what's wrong with the guitar you're buying. Also ask if you can return the guitar in the first week.
Hopefully the above gave you a little insight into if you want to buy used guitars or buy used amplifiers online. If you buy online and buy used, you're able to save a lot of money and get the perfect guitar for you have a enormously discounted price. Good luck!