thank you!!! Unfortunately the links I found in that Telegram account weren't useful. There were 2 links to Jim Humbles' website that were broken or maybe those pages were taken down? Then I poked around his website and didn't find any links for suppliers. So then I went back to Telegram and checked out other links but those didn't include any location in Costa Rica or in Latin America for that matter.
I think at local pharmacies you will maybe also be able to get the ingredients. When I recommended mms to a mexican friend in the past, I noticed that the ingredients cost around 750 dollars (on the mexican amazon, ebay etc.) and I was really shocked about the "dickish" prices. Otherwise you should be able to get the ingredients at pool stores or chemical wholesalers. Maybe you will find something there for acceptable/normal prices. Just say you want to clean a water tank or that you need it for water treatment. I hope you find what you are looking for and have a nice day/evening.
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