Free or low cost Six Sigma White/Greenbelt Certification?

[dmjacobsen]

I found the following Six Sigma Green Belt certification for $99. I'm having difficulty working out which certifications are legitimate, if that makes sense. Are they only recognised if offered by certain organisations? Worried as this seems considerably cheaper than the others.
https://www.expertrating.com/certificati...enbelt.asp

I would stay far away from that. If you scroll down the page, they're using the fact that they are PayPal verified and that their website is TRUSTe and McAfee certified as sources of legitimacy for their program. One has nothing at all to do with the other.

I see no mention of any accreditation. Reputable programs will be accredited by or have some sort of stamp of approval from an organization like IASSC, ASQ, or PMI.