Is this a weird price for a camera lense?

I looked up a fisheye camera lense for the nikon D200 on amazon and a lense popped up for about 20 dollars? I didn't know if this was weird or not because I think they are really much more expensive.

For that price it would be an attachment that screws on like a filter, and an exceptionally low quality version of that. A true fisheye lens that attaches to the camera body costs a few hundred dollars for a mediocre model, and gets closer to a thousand for a really good one.

Yeah thats way too cheap! A good camera lens should be hundreds of dollars. I don't think that's a goods camera lens. Sometimes things on amazon aren cheapo. That's really weirs. Just don't order that lens. Try going to a camera store sometimes they have good condition used lens for cheap or new ones

It's most likely a lens/filter attachment and not a bona-fide lens.

It's gonna cost you $700 for a good lens like the Nikon AF 10.5mm f/2.8 fisheye.