Suzuki Suisan, an oyster farming company based in Saka, Hiroshima Prefecture, used to offer free shipping for purchases of ¥12,000 or more, but stopped doing so in March. Oysters, a specialty of the prefecture, are frozen in their shells or fried by the company and shipped in boxes nationwide. The company can no longer offer free shipping as freight rates paid to a transportation firm it uses went up last December prior to the start of the overtime regulations. The basic rate, excluding Hokkaido and Okinawa, rose by a blanket ¥55, and the fee for a large delivery to Hokkaido increased by ¥495, or 14%. Suzuki Suisan continued to offer free shipping as part of its services for the first three months after the new rates were introduced, but it was no longer possible to maintain profits.