Lol, no more than a polish required, sadlyDefinitely won't polish out ...
I'm not an expert, but I'm sure a good body shop could pull the majority of the dent out .... they often weld loops to the skin & slide hammer the dent out in stages.
Thank you and thanks for the advice. I think the amount of work you have managed to do yourself seems a little advanced for me, but im relieved to know that its nt going to be 3K eitherI had some work done immediately pre-covid which may help compare. A Mondeo backed into by a neighbour and damage like the OPs limited to just the front door. Initial quote £1850 inc vat for new door, painting and fitting. Door and a couple of bits needed to fit was £850, Paint £390, labour £388 and sundries made the rest. This was a proper accident approved bodyshop with results where the repair couldn't be detected. So I reckon the real problem with the OP's estimate is the £1400 labour when vat is included.
What I did with mine was to buy an immaculate used door from a breakers for £40, strip it back to a bare door for painting/fitting and this bought my payable a whisker under £1000.
However my door was much more damaged than the OP's so had to be replaced. The OP's though maintains the correct shut line and gap to the adj door and all the bodyshops I've used would make an undetectable job leaving that door on and repairing it. I reckon £600-£750 for a great job... £1000 absolute tops if they have a nice reception with free coffee and cakes.
Done properly it will not devalue the car one bit.
BTW what a great looking red!