Trade-Ins We are always interested in high-quality trade-ins. These would include vintage and previously owned Brannen, Haynes and Powell flutes.  In addition, all silver Miyazawa and Muramatsu flutes are highly desirable. Intermediate professional flutes may be used as trade-ins depending on their condition, age and special options. We also take certain student flutes as trade-ins as a service to our clients.  This is a quick and easy way to save money on your current purchase, but in most cases, you may be able to sell it for more money on your own.