Huh? You can get a dozen eggs for around $1.60, depending where you shop. I can get the pub. brand and get around 18 eggs fro a $1.80. You don't need a blender. Just shake N take. 
The point: Notwithstanding the fact that I already consume eggs (which, incidentally cost less where I buy them than where you do), I can get the RTDs for about as much or for LESS. That's why I buy them. Here's the proof.
Let's see: One dozen eggs for $1.60, assuming those are large eggs, that's 72 grams of protein.
I just bought some Worldwide Nutrition Pure Protein RTDs, each containing 35 grams of protein, for $0.68
Therefore, two of those RTDs would give me 70 grams of protein (nearly the same amount as a dozen eggs) for $1.38, nearly a quarter LESS than a dozen eggs at the price you cited.
18 eggs for $1.80? That's 108 grams of protein. However, thanks to the markdowns at GNC, the Monster Milk MRPs are on sale for $1.17 each (which drops to $0.94 each with the Gold Card). Two of those is 100 grams of protein for $1.88.