I ordered dried ones from Yahoo auctions. One was enough to alter flavors for 20 minutes or so. Tablets here. They’re called 神秘果 “shen2 mi4 guo3” in Chinese. You can also find live plants at the Jianguo weekend flower market usually.
they make them here, but all local ones are technically illegal due to patent issues. or can buy fresh fruit, being in Taiwan fresh fruit is easy to send.
i sell them hint hint next day delivery within Taiwan, hint hint again. haha. just find a grower inside taiwan, taiwan always has next day delivery except holidays so fresh berries are easy to get. and winter is the best season, heavy rains ruin harvest unless covered crops are grown.