Yes, they might be cheaper at some places. But you also need to get one before you depart the country you have visited so are at the mercy of what they charge. And if you are on holiday in a country you don’t know, you are not going to want to spend a day finding the cheapest place and then have to get there and back. You will choose the closest, easiest option.
the other points made in the video was the use of the traffic light system for counties. And how they can change overnight. Which is obviously extremely problematic. Both if you are just about to leave or if you are just about to return from one of those countries.
article here about current state of uk testing.
https://www.dailymail.co.uk/news/art...te-prices.html
and regarding the tests. The question arose as to what happens if you are fully vaccinated and one of your family members test positive just before you want to return. You are now stuck for two weeks, having to find and pay for accommodation and the rest and missing two weeks work.
We need to see our governments plans for the future of international travel. Because I suspect it will be a similar fiasco. And if it is anything like that, don’t expect many people to be booking holidays.