When looking to purchase a home stereo system for under $200, especially used from a pawn shop, focus on several key factors. Prioritize sound clarity and volume capability, ensuring the system can deliver loud audio without distortion. Check for the condition of components like speakers and amplifiers, as these significantly impact performance. Consider systems with a good reputation for durability and sound quality, and look for features such as multiple input options and compatibility with various audio sources. While new boomboxes can be found in this price range, a well-maintained used stereo may offer superior sound quality and performance.