I come on here so infrequently, I missed this - sorry...!
Right so... printing. Most printers will have a Minimum Order Quantity, and even that will be frighteningly expensive if you aim only for that MOQ. Price breaks will kick in every thousand units of so, but you don't want to be throwing all your money into this and potentially be left with loads of copies sat in your garage.
Like Jonny says, this is a much better idea that most of the CAH ripoffs, but that market is incredibly saturated (and is continuing to see even more competitors added each year). Yes, yours is a family friendly take, but there are already several out there that haven't sold well - only CAH itself does numbers, and even that is starting to decline. Because of that, I don't think there's a publisher out there who'd be willing to take this on, I'm afraid.
I think the best option would be just get a few decks printed up yourself - see if you've got any local companies who will do custom playing card decks first. They'll have the facilities to print them up at good quality on decent stock, so you'll at least have a good copy yourself. It won't be as expensive as running off 500+ copies with a manufacturer, but you're still going to be looking at more than you'd pay for your average game in a store. Prototyping, which this essentially is a fancy version of, is expensive