At the moment anyone from the UK can move to any country in Europe, register, put their kids in a local school get a job seekers allowance live and work on equal footing with people who were born there.
At the moment I can order anything from the UK without it having to go through customs. I very rarely order anything from outside the EU as I have to pay an unknown duty amount and it can take weeks to clear customs.
Both of these situations will change when the UK finally exits.
I don't think the UK will save any money and I don't think they will be allowed to pick and choose which EU countries are allowed freedom of movement into the UK.
The worst part is the UK now don't have any say in which countries can join the EU.
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