Recent studies revealed that 95 percent of baby bottles on the market contain BPA (Bisphenol A). Scary, isn't it? Believe or not, Dr. Brown's baby bottles had the highest level of BPA leaching while Avent brand bottles had the lowest levels.
If you can't use anything else but Dr. Brown's baby bottle because of its cool built-in air vent, I have a good news for you. There are BPA-free Dr. Brown's baby bottles available. You can always go with the glass bottles, but they started making BPA-free plastic bottles as well.
The best places to purchase Dr. Brown's BPA-free baby bottles are no doubt Amazon and eBay. They have the best prices. If you are looking for a big lot of baby bottles or used ones, I recommend eBay. You can find new bottles on eBay as well, so shop around.
Dr. Brown's BPA-Free Baby Bottles for Sale on eBay