I have a neighbour who is an avid buyer and seller of almost anything. He bought this lens thinking it looked almost new, but knows virtually nothing about cameras and lenses. He googled it to determine a value, and was shocked to see the same lens ( he thinks) going for over US$1000. These lenses were from Japan and described as "like New". I told him it seemed awfully steep to me, but not knowing zip about Pentax lenses, I told him I'd ask the experts - that means you guys and girls.
Attached are some pictures of the lens. I must say the lens does look "like new", is very smooth to focus and has no dust or fungus that I can see.
What he is really looking for is a fair price to ask for the lens. TIA for any help offered.