I have reached out to Suzi Santiago regarding the service they offer to help deal with purchasing a bike.

I mentioned the rules about tourists leaving the country on Chilean plated bikes. They were a bit vague and didn't offer any methodology but they said that 100% of their customers are able to do so.

I quote:

"We have help more than 400 travelers to cross borders, many of them with a bike, so don't worry about crossing borders, it is very possible and not a big story. We will supply you with a border list and all the paperwork you need to show in case they ask for it. 100% of our clients have crossed to Argentina and Bolivia, also the entire process can take up to a week and a half."

Are they legit or just yanking my chain?

I'd be a little ticked if we got to the first border and found out they were mistaken.