ooh Trill - yuck!

DH did it about 3 years ago. He was on the 1500cals but he's a man-mountain. He lost 20kgs in a few months. I was BFing and that isn't allowed, and yes it's expensive. Way more than groceries would be. Also because there was DD and I I was having to buy our stuff too (as you would if you've got los).
He was happy with the tastes of most things but he was in the Navy for many many years and as a result his idea of quality food is warped lol.
Convenience is great....but when Mum and Dad tried it, she was at a loss to know what to do with herself around mealtimes because there was no prep involved, and the meal is over in about 4 seconds flat.....
However you aren't learning to make proper food in the appropriate portions yourself, so when DH went off it - all the weight went back on becasue it hadn't taught him anything