I agree with Brad. Papayas are easy to grow from seed and most of the selected cultivars are either predominately female or hermaphroditic. And the female ones are typically parthenocarpic. I have had very good luck with fruiting Tainung #2 seedlings. But the plants are large (6-8 ft) when they start fruiting. TR Hovey (which you can get as small tissue culture plants online from many sources) will fruit at 3-4 ft. But the fruit is ... meh.