Is it ok to sell used baby feeding bottles?

Well as long as they are sanitized there should be no harm in it. I personally would not buy them on Ebay of the like but I am sure there are people who will and do.

Well if you sterilize it then it is ok. I know that some baby bottles are expensive so i think it is better to sell them if your are not expecting or wants another baby soon.

Personally, I would certainly not consider buying used feeding bottles, even if they were glass. They are not that expensive and I would feel more secure buying new from a reputable supplier. I would also want to be sure that they were made of a safe plastic which cannot leach harmful ingredients into the milk.

I would say No, Im pretty sure its unsanitary and they may not even allow that type of item on eBay. If they were Brand New its a different story, If it was me I would just throw them away or save them and maybe down the road have a yard sale MAKE SURE YOU NOTE THEY WERE USED. Also be sure to disinfect them the best way you can. The last thing you need is a baby getting sick, Babies are way more susceptible to getting sick then a grown adult is. My Opinion is just throw them away