Once Upon A Child is a great place to shop for baby needs before heading to regular retail stores. They have the highest-quality used items I've seen in a consignment store. Toys and clothes look practically new...in some cases the clothes *are* new, with tags still attached.
Unfortunately, this means that when it comes to selling your no-longer-needed baby items, this store is very picky. Clothes, gear, and toys have to be in pristine condition to be accepted. I have scrubbed nooks and crannies of toys with a toothbrush for 45 minutes only to be told to take the toy home and clean it before they will consider it. Some of my children's clothes have been accepted, and they pay a very decent amount--half of what they will sell it for. But they seem to turn down more than they accept.
Still, this is a great place to shop: consignment store prices on like-new merchandise.