I wonder if you have a Trader Joe's near you, or if you're envisioning something different than what it really is.
I looked up personal chef's, and the one I found near me costs $230 plus the cost of groceries for 4 meals a week. Of course they're cooking super yummy things such as orange duck and rack of lamb, and give you an appetizer, entree, side, and desert. My child would think he'd gone to heaven.
I spend a lot on groceries, mainly because I buy a lot of produce, but a personal chef wouldn't help with that, because I'd expect them to use produce too. The entrees I'm buying seem to cost between $4 and $8 for the two of us, sometimes a little less. Now, I know I could buy hamburger meat for $2.00 a lb or something, and get 2 meals out of it, so let's assume entree costs $1.00 a day, I'm still only adding on average $5 a day or $30 bucks a week by buying premade stuff, way less than $230 for 4 days.
Also, TJ's apparently doesn't use artificial preservatives. I do worry about salt, but I think as long as I read labels carefully it won't be horrible. The entrees I've served this week have ranged from about 150 to 700 mg of salt, and from about 180 to 300 calories. This is in addition to any salt (minimal since I'm buying fresh or frozen and don't add any) or calories that come from fruit and veggies.
It's funny, I started this thread feeling guilty, but every time I research an option that other people suggest, I end up feeling better about my choice.
You guys are probably starting to think I work in the marketing division of Trader Joe's aren't you? I assure you that I don't.