Well, this little guy's transparent map is an absolute nightmare. The bump and normal maps are also desolate.

But the price of over $10 is a real challenge. If someone takes the trouble to make such a beautiful chick, then the same care should not be missing with the textures. Enlarged the transparent map with AI, then increased the contrast again... ok, then it looked acceptable. I got the BumpMap from my own fund. I didn't need to increase the transparent bounces, there's no need for such a cheap texture.