How it's calculated
Customs value = price + shipping to the EU. 10% duty, excise on the value plus duty, 23% VAT on the value, duty and excise.
Moving — no taxes
If you're moving to Poland with your car, check relocation property: if the conditions are met, there's no duty, VAT or excise.
Registration
Inspection, OC, sworn translation of documents, the registration office, plates.