Share 'where to buy beans?????'

Hello fellow chocolate heads... I'm looking for some cacao beans. Just small quantities (500g-1kg) of beans to buy - fermented and unfermented, all unshelled ('unpeeled'), to experiment with for making old-school drinking chocolate. And ideally all from Central America, eg Tabasco, Guatemala - because I'm trying to replicate pre-Colombian cacao-based drinks. I'm writing a book on it, and I'm doin…