Vitamin supplements and less than three meals a day, yeah. It's certainly not good, though, no, and I'm aware of that -- most of the reason it is like it is is 'cause I just can't seem to manage to stomach a lot of the healthier stuff, though I try off and on. That said, it hasn't killed me quite yet and I've be doing basically the same thing for about seven or eight years, now. Weight's been stable, don't get sick often, doctor visits that occur have been overall positive. Long term's probably going to have a bit of trouble, but it's honestly healthier than a lot of people I know eat ('course, I'm a mostly rural southerner so that may not be saying much), and many of them are up in their seventies and eighties now and doing alright.
I wouldn't recommend my diet for most folks, no. But again, it's more an example than anything else. I eyeball prices on a lot of stuff I don't personally eat, and you can get something with a much better spread for roughly the same price, especially if you're buying in bulk and whatnot. Most of my contention was with the price being mentioned as cheap than anything related to health (The number crunched $5/meal is something like double or better what I've been operating at, and 150-ish for a month is about $70-80 more than I usually spend -- and I'm not actually crunching down and getting it as low as I can go.). I'd have to see some price per unit to be able to say if you can manage the same nutrient intake for less, at least in the area I'm in. But, as mentioned, I'm somewhat dubious. Vitamin supplements are incredible cheap (on a per-day basis, anyway) from what I've seen, and using those to fill in nutrient gaps seems like it might be more economical from a cost perspective, at least in the area I'm in (And, as mentioned, a cursory look in a larger city was only showing a 50-100% increase in price, which would still likely fall below the slurry's price point).