Buying Herbs from Amazon Rainforest

Hi Cure-zone-folk,

I was thinking of going to a healing center in Peru at some point if I can manage that both schedule-wise and financially but for the time being I was hoping to purchase some herbs that at least come from the area or somewhere in the Amazon. Does anyone know of an on line website where I can make such a purchase. I know can buy the products I want in a health shop but I want to get the authentic herbs. In particular I want to buy Una De Gato, Sangre de Gado, and Chuchuhuasi, but there may be others I will want in the future. Please let me know. Thanks so much.