Nelley's is a reseller, they have there own model numbers, we know what they are, Andy does the same with his line of rebranded Dahua stuff, That's Just the Business if you are a reseller. At the end of the video posted is a link to a full review and unboxing, did you bother to watch that? Sean goes into great detail of what to expect from these line of cameras and yes you get to see the semi grainy video under NO light conditions without the moon, you will get a feel of what this cam will do in different lighting conditions.
Is the video posted deceiving? It clearly shows what the cam will do under perfect low light conditions, his follow up video of the review also show grainy video at not so great and total dark conditions. They are in the business of selling and supporting cameras, I do not think they are "Playing Games" with people. I do know if the camera did not meet your expectations they will refund it. I have done my share of business with them over the years and they answer the phone and will remote in to take a look if needed to help you out. I guess it up to the person to decide what is best for them. Not everybody is skilled enough or even wants to mess with this stuff and would rather have someone to call that WILL answer.