I bought a Tamron Zoom 28-300mm f/3.5-6.3 XR Di about 5 years ago or so (maybe longer). It was used for a short time. I have the box and all original documentation. It's in like new condition. I know it retailed around $500. My friend wants to buy it. I have no clue how to put a value on it. I want to give it to her at a good price, but I don't even know where to begin.
Anyone? Pretty please?