When I did my trade in I snapped pics, called up TW, then told them I want to inquire about the trade in program. I said, "Hey i snapped a few pics. If you want me to send them to an email address so you can check it out while were on the phone, let me get the email". We did just that and I got an appraisal based on my sick photography skills and was given instruction on where to send it to and how long I can expect to receive the credit.
Yonex VCORE 95D - Pacific Classic 16 x MSV Co-Focus 1.18 @ 54/45 lbs