ISO Auditor Training: Seeking Advice?

My dear member fellows,

I'm planing to get ISO Auditor Training online. I have googled and came to a web source that claims 100% money back guarantee for the said training. I just want to assure that: is ISO Auditor Training offered by this website really works and/or do they really worth trying? It is always hard to make our final decision when it comes to spend our hard-earned cash on these kinds of online training programs. Please guide and help me in this regard. I will be so thankful to all the responses shared over here.

Regards,