https://ec.europa.eu/taxation_customs/business/vat/eu-vat-rules-topic/chargeable-event-chargeability_enImportation of goods from outside the EU
Basic rule
The chargeable event occurs and VAT becomes chargeable when the following types of goods enter the EU:
That's just above. VAT is calculated on the value of one good when it enters the UE.
If the actual price of the BCU1525 is unchanged at 3600USD after hosting at mineority (1,2 or 3 years) -at the day of shipping-, then the VAT is due on 3600USD.
Keep in mind that some 2nd hand market goods can see their value increase eg rare cars, luxury goods, vintage items...
...which is why fpga.land's charging me VAT on an item that isn't shipped to the EU (because it will be hosted) at 20% on the new price is wrong on two accounts.
I have asked them to refund me that VAT.
We shall see.