According to the "about us" section on the Site they are active JW's who moved from Canada to S America to serve you know where.
I cannot believe the JW Org is unaware of their activities, but as they claim to employ pioneers mainly, and to be active themselves, the Org coming down hard on them would be seen as most strange by even the very gullible JW's.
i don't think it would be that easy to undercut them much on price without sacrificing quality, but why bother anyway ?
If you have the skills to set up a similar on-line business why not do so with products which will appeal to a wider market ?
In the grand scheme of things these guys are harmless opportunists, our Activist work could be better directed than trying to put them out of business.