Those look like cajuiles, another fruit I adore!
I love strawberries and grapes in season. Not so much out of season. If I do go back to DR (I forgot to answer the poster who asked me that in this thread, sorry), I know I'll miss apples. Apples suck in the DR. They're pretty much all mealy and flavorless. I'll never bother to make an apple dessert there.
I don't think you're missing out on dragon fruit, even if they're beautiful.