//Will food, fuel and other such everyday factors be lower priced and more available if we are out? Will they be, at least, no more worse off. These are the things the vast majority of the population are concerned with.//
I don’t think the vast majority of the population are solely concerned with that and if they are they should take a broader view. But to take a tiny example, the EU recently increased its tariff on imported oranges from 3.2% to 16%. This was at the request of Spain which has a relatively small orange growing industry. The result of this is that the tariff on oranges from outside the EU (that is, all oranges other than Spanish ones) which are bought by the vast majority of people who buy oranges in the UK (and who are probably among the “vast majority” you speak of who are concerned about such things) has increased five-fold. This is to protect a small industry which is not in the UK and in which the UK has no direct interest. There are countless such examples – rice is another because there is a very small rice growing industry in Greece and Bulgaria and tariffs on imported rice have recently increased for a similar reason. I quote just one for explanation.
Nobody knows how the prices of food and other items will change after Brexit. The crucial factor is that the economy will be under the control of the UK government and it will be able to act unilaterally without needing to consider the requirements of 27 other nations.
//You also said there would be no hold ups on the calais - dover but there already has been,..//
Has there? Perhaps you could explain them to us and, most importantly, explain how they arose because of Brexit.
//..queues at foreign airports…//
The worst queues I suffer at foreign airports are at those within the EU. When I travel further afield things are far less frantic.