Looking at the seller's other listings, many appear to be Athearn cars, some with Bev-Bel paint schemes. Look at the door claws on the boxcars. He even uses prototype photos in his "ads". There is a lot of work put into these cars, but they are still Athearn cars under all that paint. Several sayings come to mind.
Art is in the eye of the beholder. A fool and his money are soon parted.