General Front door hinge

[Guy Incognito]

My drivers door drops when I open it (and clips the top edge of the sliding door)and needs a good bang to shut it.

I see plenty of people have this. I can see where it's moving. The top hinge. I assume this isnt something that can be tightened and needs replacing?

My actual question is if a main dealer is the o ly place to get them? Can't even seem to find any on eBay which I thought was odd.

Any suggestions or should I just head to the dealers? Anyone know roughly what I should expect to pay?

I've seen the post about just changing the side that's connected to the door so that's my plan.

Cheers