Limited amount of Kwai muk seeds, direct from Grimal's Grove, in Big Pine Key, FL....$2 ea, no minimum order.
I have heard from experienced Kwai muk eaters, that some trees produce superior fruits.
I have only tasted fruits from one tree, which was the one Adolf Grimal planted at his grove. The fruit was excellent, reminding me of a citrus, mango flavor...I can't imagine them tasting much better.