"But then, in the 1990s, Robert Pearlman says, the insurance autographs started showing up in space memorabilia auctions. An Apollo 11 insurance autograph can cost as much as $30,000."

https://www.npr.org/sections/money/2012/08/30/160267398/what...

Yes, but the non-insurance ones (that actually went to space) are worth a lot more. Here's a brief segment from Antiques Roadshow: https://www.pbs.org/wgbh/roadshow/season/20/charleston-sc/ap...