I'm not bothering with expectation. Whatever change occurs we'll adjust to, and believe things will be better in the long run when all's settled. No point in guessing what goes up or down on day one.
Price falls in all[i goods which we will buy at world prices, and which currently attract (often massive) tariffs under the Customs Union. Like lots of food.
Of course, this means that we will have left the EU [i]de facto] not just in name.
Price falls! Yeah right.
This thread identifies most people’s naivety about how world trade works and especially the situation with EU tariffs, post Brexit.