A note about custard apples. I bought one at the farmer's market in Kona, HI in Dec. 2000. It was the biggest one my S-E Asia origin family had seen (we're very familiar with it) and also the sweetest and tastiest one anyone recalled every tasting. It was also at the peak of ripeness so it would bruise easily and fell apart when you pulled the skin (not good for shipping). Maybe you can get a friend visiting Hawaii to buy you one (if it can get past ag inspecting).