Price includes the shipping and is net to me. Only possible trade of some sort would be an Aquatech or Nauticam housing for a7r3 or a like new a7r3 body. Check my other posts for other items, selling off all my Canon equipment. Have bought and sold tens of thousands here with no issues, buy with confidence!
Used this lens maybe 3 times to shoot astro. Glass is fine, I cleaned it up after the photos. Can provide if you're concerned.
Please let me know if you have questions or want more pics.