Items seem extremely underpriced in some cases. In others, they seem around where they should be. People seem satisfied on Trustpilot, but it could be attributed to herd mentality, and the reviews might be about the service and shipping speed rather than the authenticity.

One thing that's a big red flag for me is they're not on the AFTAL list. 

https://www.mrmemorabiliastore.com/

What say you?