Nintendo Co. pulled its products from Amazon.com Inc.’s US site after a disagreement over unauthorized sales, meaning the e-commerce company missed out on the recent debut of Nintendo’s Switch 2 — the biggest game console launch of all time.

The Japanese company stopped selling on Amazon after noticing that third-party merchants were offering games for sale in the US at prices that undercut Nintendo’s advertised rates, according to a person familiar with the situation. Enterprising sellers were buying Nintendo products in bulk in Southeast Asia and exporting them to the US, said the person, who requested anonymity to discuss confidential information.