YoBaby is definitely expensive. I cringe whenever I see that coupon, where it says you get 75 cents off of 3 packs. You call that a coupon? Who can even afford to buy 3 at once? *laughs* I usually buy two, and only getting 25 cents per pack is puny, imho :)
The reason I get YoBaby is because it is organic and because there is less sugar in it than regular brand yogurts, even tho it's not "light" or "non-fat". Trader Joe's just phased out it's YoBaby, and told me they had their own generic brand for babies. But when I went to check it out, it had more sugar. It was basically just regular, adult yogurt in tiny little cups. So, now we buy it from Safeway. I have no problem with high amounts of sugar as long as they come from natural sources, and not from added refined/processed sugar, as in most regular yogurt.
I think for this reason, I will probably keep using YoBaby until I can find a good/comparable replacement. My mother in law has a yogurt machine from way back, so I'm interested in checking that out as well!
I think that as soon as you are okay with allowing your children higher amounts of sugar, regular organic (or non-organic) yogurt is ok.
Oh! I forgot to mention: my daughter will turn two next week, so she's been getting it for a while.