As mentioned above, used equipment should average about 50% or less of the retail price, while new equipment can often be found for 80-90% of retail. Therefore your savings from buying used should generally be about 40% off retail. One thing not mentioned yet is the added cost associated with buying used items you have not auditioned, then finding they do not work in your system. Sometimes you can break even when reselling them, but other times you will be down at least the shipping costs, unless you can afford to wait for the right buyer. If you like the cost savings from buying used, there are ways to reduce the risks, such as buying from reputable sellers (good feedback or dealer demos), buying more recently made equipment (which should not have significant wear or parts failure problems), and buying from still-active manufacturers who offer repair (and possibly upgrade) service on their equipment. Your example of using an item for a "few months" before it started acting up is unusual, and indicates the piece was probably working fine for the previous owner. Sounds like simply some bad luck on your part. I wouldn't give up on purchasing used, but you have to decide your own comfort level.