If buying in person, check for scratchy pots and functional electronics. If buying online, ask for gut shots (photos of the wiring).
Never buy on emotion. If a deal feels rushed or "too good to be true," it often is. buy sell trade guitars
Before purchasing, know the market. Use Reverb and eBay completed listings to find the actual sold price, not just the asking price. If buying in person, check for scratchy pots