I've heard the same thing. Dwarf june plum/ambarella is also a Spondias, and can be easily grown in a pot and will fruit within a year. That might be your best bet. It is fairly commonly sold in vietnamese markets but the fruits are usually picked green and far too early to have a good seed. I got one from Logee's a while ago but it since has died. I honestly don't know why either, it was healthy, then it went dormant for winter, I cut back watering and it still got moldy at the top and then it just died from top to bottom. I sprayed it with neem and still nothing helped. Anyway, I really want to fruit a Spondias of any kind as they are all quite delicious and like a small mango.