Yeah, they're definitely a waste of money. You could get an identical product if you ate something with a lot of casein, a bit of fat to slow gastric emptying, and swallowed a multivitamin. You're paying extra for marketing, not quality. Warm some natural PB to soften it slightly, and mix that stuff in with cottage cheese.
I'll probably get flamed for this, but I still don't believe that sleep is such a catabolic state that going 6-8 hours without a meal will hinder gains. Getting adequete rest is essential for anabolism, is it not?