I see many "Yellow Bellies" for sale all over the net. I must admit that many that I see do not look like a Yellow Belly.. or let me rephrase that.. Not many of them look like what I look for in a Yellow Belly.
Keep in mind there are also nice looking Yellow Bellies and drab looking Yellow Bellies, just like with any other morph.
I look for the spot on the head, the clear belly, the pixelated markings where the belly meets the sides, the awesome flames on the sides, and I also love to see a little yellow on the outer belly scales.
Your examples are great, but I don't expect any less from a ball python in your collection. 
Here is one of mine..
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Rick Sisco
Sisco Reptiles
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