both sellers are using the same photos in their auctions. the first seller has slideshows in their listing and the same photos used by the second seller are in the slideshow. they are also offering the same 15 brush kit with the same picture used.
the brushes in the photos look real enough in the pictures, but i can't be conclusive as the pictures are fairly small. given that both sellers have the same pics it's also possible that they are stock photos.
couple the pictures used, the offering of a 15 brush kit and the price of the brushes ($0.99 for a kit worth $450?) I'd be wanting more detailed pictures of the actual brush up for sale from the seller before bidding.