Disagree here on the Marxist point, a Marxist would never want to be in the EU. Labour have a big problem their more left wing northern areas want out while there more middle class Champaign socialists (London and South) want to stay in the EU. The sad fact is Brexit was voted on because people were becoming harder up year after year any no one was listening.
Anyone who earns under £65000 who votes for the Conservative party needs a blow to the head.;-)
They retail from the mint at £85, so you’ll struggle to find one much cheaper than this - at least for now.
If you start with the older Britannia proofs, you might find something cheaper (excluding the 1997).