Consistent app icons...almost

I like the idea of using consistent branding on apps, especially for a company with a strong brand like Amazon. It can help the apps stand out in a crowded marketplace...and with so many apps available, it surely is a crowded marketplace.

But I wish that Amazon would go 100% of the way in making the icons consistent. There are 3 different icon styles above:

1. Student and Deals are using the same style - well done!
2. PriceCheck has a different amazon logo, a light outline around the bottom portion, and a different gradient
3. On the main app, the white portion is thicker and the amazon logo is much larger

Putting out consistent icons shouldn't be that challenging. With layers, it's just a matter of replacing the image.