The trouble with estimating cock size from most of these pictures is that the items you're using for comparison come in many different sizes. Toothpaste, mouthwash, shaving cream, and most commercial products can be many different lengths and widths. Unless we can READ the size of the object in the photo, it doesn't mean much.
While my TV remote is 8 inches, they aren't all that long.
Dollars bills are a good measure, but the objects DO need to be photographed exactly parallel to the cock. Perspective skews the size perception.