If the bubbles are important to your day, I would recommend buying a few different brands/bottles of bubbles to see which work the best. (The soap to water ratio could vary from bottle to bottle or manufacturer to manufacturer... The longer the bubble solution has been in the bottle might matter too? Science questions that I don't know the answer to...)
If you find bubbles that you like, you could then try to buy that brand in bulk, and perhaps personalize the bubble bottles yourselves if you (or someone in your family) would like to take on a DIY project.
Other than that, maybe a DISBride has had good luck with a retailer.