I believe Aravaipa's season is already over by a couple months, at least in CA, so you might want to try again next September if you don't get anyone who stored seeds in a refrigerator or something. Sometimes Marta lists them on her website when they are in season, and she might be willing to ship them internationally:
https://reallygoodplants.com/I've been getting seeds from her for a few years now, while waiting for my greenhouse trees to get big enough to produce seeds for the avocado breeding project. Unfortunately I don't expect having any extra seeds to spare for many years, if ever.