N. ampullaria * N. mirabilis, N. ampullaria * N. insignis and N. ampullaria * N. maxima are the only possible combinations that makes sense for seed from Papua.
These are some really bad companies, all shells of Plantron Inc., so don't order from them unless you want small and dead plants they don't want to refund:
Farmer Seed and Nursery
Four Seasons Nursery
House of Wesley
Richard Owen Nursery
How do garbage companies like these stay in business, ripping people off year