I've been to Sweet Daddy in Phoenix, they now have 3 locations. They blow Sprinkles away. My 4 kids actually spit out their Sprinkles cupcakes, they thought it was awful. I tried to force myself to eat one...didn't really work.
I bought my daughter a cake like that from Target back in 2007, it was 29.99, it had a sheet cake in the middle, cupcakes around the sides. And it was a 1/8 sheet cake. Fed about 20 people if that. Your friend definitely got ripped off!