I'll also add that she buys most of her main ingredients (meat, veggies, etc) on sale, so the price per serving reflects the sale price. So you really have to know what's going on sale this week/month at your local store(s) and then match those ingredients up against her recipes, as the cost per serving can be significantly higher if you have to buy full priced beef, for example.
That having been said, just about everything on there is delicious and Budget Bytes is my first stop every week for meal planning. It's good to know that if things are on sale for a recipe I've never tried before, I can go ahead and get them with high confidence that the meal will be tasty.