They do, they buy both digital and film cameras depending on an in person assessment. They will also reject cameras that have no market value for them (ex polaroids and other formats for which their is no film). I've known them to provide either a dollar value or in store credit. Typically you will get more for in store credit and most for selling the camera yourself.
That goes for lenes also. I got a good deal on a trade-in lens for a fair price.
Yes they buy old cameras
Yes. I believe they do buy old cameras. They sell them too
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