dslr setups now?

I'm at the stage where I'm trying to figure out what to do with my fabulous Canon 7dmkii/Nauticam system.

I'm considering selling it but not sure if there's any market/value at all? I am not on FB so don't have access to things like the marketplace or specific uw photography sales pages.

Both camera and housing are due for a service - a nice chunk of change. Maybe better to just forget it altogether and continue on my journey towards a more updated system?

I'm currently using the baby Oly TG7 setup and enjoy it 90% of the time, but do find myself frustrated now and again so I need to bite the bullet and get my existing gear sorted (about a two month wait, I'm told) or buy something new (probably a longer wait because I still can't make a decision and obviously way more upfront expense).

What's everyone's thoughts? Photo just because it's more interesting :)