The difference is quite obvious. After taking a bit closer look at the facial and anatomical details in his mounts it becomes clear why he loves his work. If you are more concerned about the cost rather than the quality, then probably Ben's work is not for you, as he is willing to spend enormous amount of time on a regular base on each individual mount to create the quality which he expects from himself.
Take a moment and have a close look at the pictures below to find out what we mean.

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