Rule 3 - Determination of the method of valuation

Transaction value principle: accept declared transaction value when unrestricted, determinable and not influenced by related-party relationship.

Customs value is primarily the transaction value, adjusted per rule 10, accepted where there are no material usage or disposition restrictions, the price is determinable, no resale proceeds accrue to the seller unless adjusted, and where buyer and seller are unrelated or the relationship did not influence price. For related parties, transaction value is acceptable if circumstances show no price influence or if the declared value closely approximates comparable transaction, deductive or computed values, with due allowance for commercial level, quantity, rule 10 adjustments and seller costs; otherwise valuation proceeds under rules 4-9.