Signed/framed Robert Bateman

I've heard collectors can pay good money for certain ones. This one is signed on the painting itself and on the bottom right of the frame. I know nothing of art so maybe someone here would know. It's quite large, as you can see. Unfortunately, this one has no certificate so I assume it wouldn't be worth that much.

https://imgur.com/a/4yxGN

This second one here is a signed print as well, with the certificates.

https://imgur.com/a/cKKoc