ours works out at £300 each which includes airport parking , flights from manc 2 nights hotel , match tickets and all tests - just metro tix, food and ale on top of that. Having said that no time off work needed
As for the Covid tests, I have travelled last week from Portugal to UK to watch the Palace game so I can share my experience:
I stayed in the UK for just 2 days but I still needed to book a day-two test (no sense in my opinion).
So I was told that you can get a reference for the day 2 test without actually paying for it (and then you just need to put that reference in the passenger locator form)
This is where I got the reference from:
https://www.dnaworkplace.com/ -> you just need to complete all the steps until you get the reference
So in the end I didn't pay for the day 2 test, and nobody asked me for it.
I also know of people who came back to UK from Portugal and did the exact same thing but then they received phone calls to confirm they would get the day 2 test at their accommodation. They decided to contact the test provider, gave them the original reference, paid for it, and then received the test a few days later.
This is only a piece of advice that is not legally correct, be aware of that