Budget and what format? Samples? Loops? Sampler (Kontakt, Halion, etc.) files? VST plugin? Cloud subscription?
MusicRadar has a free loop section.
Loopmasters currently has a 50% sale going.
This one for free Aria Player is hard to beat and it's on sale until midnight. It lists these under "Latin America":
Wind: Andean Panpipes, Ocarina 1, Ocarina 2, Peruvian Panpipes, Quena, Tarka
Percusssion: Afoxe, Agogo Bell, Agogo Block, Atabaque, Berimbau, Bombo, Cuica, Latin Percussion 1, Latin Percussion 2, Rain Stick, Teponaxtli, Tinaja
String: South American Harp (Arpa), Veracruz Harp, Guitarron
Additional:Bandoneon, Steel Drums
World Instruments, World Instruments plugin, buy World Instruments, download World Instruments trial, Garritan World Instruments
Paj
8^)