It makes sense to buy now.

Starting from April 2019, you can buy and download FunSongs action song packages without having to pay VAT tax. This applies to teachers and schools located within the European Union.
Your school can also purchase an annual FunSongs licence for just €159.00 without the cost of added VAT tax.

These changes are the result of the UK’s decision to leave the European Union. However since the situation is still unclear and the UK is still a member, VAT could be reintroduced in the near future.

It makes sense to buy your action song packages and school licence now. And if you are located in Italy you can use your Carta Docente.