We are in the same position fortunately when we fitted the EV charger was only £350, now they are around the £1,000 mark, I totally agree PHEV AP are now ridiculous around £2,000 more than a modern Hybrid, and as you stated before £3,000 extra that a lot of fuel.
Ideally we would would be better off with a full EV, however we tow a caravan so in June we are going to extend our current lease, after that we will have to have a long hard think.
Unfortunately I have suffered a brain injury and occasionally I get confused and often say the wrong thing.