For the USA it’s 0% - but you’ll get charged import duty/sales tax by Uncle Sam who simply loves making life complicated…
(I send a commercial invoice with the product which includes the cost of the product (£0) and cost of shipping (£50). US Customs then assess whether to charge any local sales tax and import duty to the receiver that I guess will depend on your state.)
It won’t be silly money and it’s probably cheaper to stick it in the mail and wait than it is to work it out.
Matt that works for me. I’ll need time to get some cardboard to box this lot first but yes, I’ll plan to ship two boxes full.
Same for North America. Marko sent over 1/2 of the available units. So if you live in the US, Canada or Mexico please PM me if you are interested in a emonDHW. (see info and pictures above)