Family members' allowances add up only if you arrive at the same time, in the same vehicle or flight.
Use the receipt value. Clothes, toiletries, up to two laptops and three phones each, and other personal baggage don't count here.
Estimate based on RGCE 2026 rules 3.2.2, 3.2.3 and 3.2.11 (checked October 5, 2026). Customs decides at the border. Not legal advice.