I bought a used "good" condition Sony Alpha A900 with a shutter count of only 16.000 and a fitting original vertical grip.

The "tested and fully working" camera turns out to have major problems with the front setting wheel, as it barely registers any input.

One would think a camera site specifically for used camera gear would test that?!

The bayonet/lens mount is also loose, so I am losing connections to heavy lenses or whilst supporting the lens with my hands when shooting Tele Lenses.

Zooming in or out too fast can also trigger that problem, making the current aperture disappear.

The Remote that came with the camera also isn't working according to the manual with fresh and correct batteries and the correct procedure.

The Battery Grip has major problems with the rear setting wheel, as the camera does with the front setting wheel.

What to do now? Ask for a hefty amount of money back or send the camera back to them?

I would love a replacement for the time that I wait for a better example to turn up or that they pay for the repairs needed to get in into the state they've described in the listing.

As is, the camera is not fully working, at least to me.

I need that camera for some shootings as my other A900 isn't autofocusing because someone reglued the mirror very bad.