Not undermining your bigger-picture point but did you look to see whether you can buy this module from another supplier, one who does supply from within the EU? You could ask the manufacturer who sells their module in the EU?
I don’t think there is any way round having to pay tax but finding a supplier within the EU may reduce the shipping fee and avoid the tax-handling overheads.
A friend of mine tried to order two L5 screen protectors ($10 each) to Kazakhstan (middle Asia). Purism requested shipping fee of $100… So EU shipping fee seems to be even pretty liberal.
For anyway readding this in the future. You know what I did?
I had a problem with my phone and sent in for repair. I emailed Purism asking if I can buy a PGP card and if they can put set card in the box with the phone when they send it back so I won’t have to pay the shipping. And they said yes. What an amazing company <3