Originally posted by Flipmack Similarly, is the 16-50 still a lens that's in high demand? If that's the case, then I may just sell via the forum...
I concur with the above advice, though I'd suggest that most of us have only a partial knowledge of the total market. I perceive the market may be softening just a bit for that lens. I bought a good 16-50 used from the Marketplace here in early 2015. The lens included all the expected items: box, pouch, end caps, and it also came with a good circular polarizer and UV filter. The SDM was, and still is, working, though it had been repaired a few years earlier. I paid $625 for the entire outfit, which seemed to be a good deal at the time. I've watched a few 16-50's on the Marketplace here and noted that they remained there for a while, and had some minor price reductions. From looking at the listings, I don't think I could get $625 for my 16-50 + accessories, currently. I'm thinking in the low $500's is about where it would sell in today's market.
The 16-50 is a very good lens and gives great photos. A very high percentage of people who have that lens or are looking to buy it know of its pros and cons. The SDM issue you mention would cause a mark down, most likely. The 16-50 is probably the lens most well known for SDM failure and I'm thinking some purchasers would interpret the SDM squeaking as "its going to fail soon". So an answer for the SDM squeaking is probably necessary.
Now, about the lens hood.... yes, they can be replaced, but those seem to be really expensive for what they are - just a piece of plastic with no moving parts (aside from the removable window for polarizer adjustments). If these things were a Wal-Mart item they would be at most 2 bucks. But we see today they are $59.95 at B&H. (
Pentax PH-RBJ 77mm Lens Hood for SCMP-DA* 16-50mm f/2.8 ED 38753) So you might have to figure that in the price or negotiation as well.
I haven't looked at prices for the 16-50 on ebay, but my first thought is you would do better selling it on the Marketplace here, where the purchasers are capable, focused, and educated.
My $0.02. Hope this helps.