Any second-hand value in an old Sea & Sea MDX-D300 setup?

Hi everyone,

I have an old Sea & Sea MDX-D300 underwater housing for the Nikon D300. It has seen a lot of use and a few of the buttons are no longer working properly.

I also have a replacement O-ring kit that I bought with the intention of giving the housing a full overhaul, but I never got around to doing it.

Along with the housing, I have two Nikon D300 camera bodies. Both are heavily used and show quite a lot of cosmetic wear, but they are still in working condition.

Do you think any of this still has some value on the second-hand market, either as a complete set or separately? Or is it basically too old and worn to be worth selling?

I’d rather not throw it all away if someone could still make use of it.

Thanks!