Good information in the above posts about doing whatever you can to get to know the seller, preferably through asking a few questions in person.
One thing I'd like to amplify upon is the risk of shipping. I've had very good luck in finding wonderful equipment here from buyers who are honest and helpful but two of the last three items I've bought have arrived damaged because of inadequate packing.
It's important to have the original box available but that's just the start. Many original boxes were designed only to hold the gear while stacked on a palatte with other boxes, not to withstand the handling while being shipped individually. That's particularly true of some equipment that might be considered consumer-grade but even some very high-end gear comes from the manufacturer in packing that clearly was just an after-thought.
Rigid foam, styrofoam or equivalent, just doesn't work if that's the only protection the gear has. The first jolt crushes the foam and the second one damages the gear. Using a combination of resiliant material and rigid foam seems to help a lot and double boxing is good insurance.
It may be difficult to negotiate with the seller over the quality of the packing but it's worth paying attention to. Insurance is important but settling a claim satisfactorily is difficult, sometimes impossible, and it's very disappointing to find a deal on a piece of equipment you really want and then open the box to find it damaged.
This shouldn't discourage you from buying used, I've bought lots of stuff and highly recommend the process, but this is just part of the diligence in making sure you have a good experience.
One thing I'd like to amplify upon is the risk of shipping. I've had very good luck in finding wonderful equipment here from buyers who are honest and helpful but two of the last three items I've bought have arrived damaged because of inadequate packing.
It's important to have the original box available but that's just the start. Many original boxes were designed only to hold the gear while stacked on a palatte with other boxes, not to withstand the handling while being shipped individually. That's particularly true of some equipment that might be considered consumer-grade but even some very high-end gear comes from the manufacturer in packing that clearly was just an after-thought.
Rigid foam, styrofoam or equivalent, just doesn't work if that's the only protection the gear has. The first jolt crushes the foam and the second one damages the gear. Using a combination of resiliant material and rigid foam seems to help a lot and double boxing is good insurance.
It may be difficult to negotiate with the seller over the quality of the packing but it's worth paying attention to. Insurance is important but settling a claim satisfactorily is difficult, sometimes impossible, and it's very disappointing to find a deal on a piece of equipment you really want and then open the box to find it damaged.
This shouldn't discourage you from buying used, I've bought lots of stuff and highly recommend the process, but this is just part of the diligence in making sure you have a good experience.