I raised my kids on mostly used stuff. Cribs are expensive. What people need are good cribs with metal hardware. Plastic sides to slide the cribs are the problem NOT "drop side cribs." Drop side cribs have been used for over 100 years, and when the mechanisms are made from metal, they are perfectly safe. Two of our three cribs were used, as was our cradle and baby swing. Babies die from being left alone for too long, not from cribs. Our kids spent most of the time until they could roll over on their own in OUR bed so there were completely safe. Even in their own cribs, they were checked in frequently.
Toys? It's expensive buying everything you need for kids new. As long as the toy is high quality, I see no harm in it. There is still contaminated NEW toys coming into the country, so buying new is no guarantee. Until we stop buying cheap crap from China, it will continue to be a problem. Old toys, from the 50s through the 80s were mostly made IN the USA and are mostly safe.
NEVER buy used breast pumps. It's like buying someone's old IV bag. Most single patient use pumps are meant for ONE woman and one woman only. Bacteria, mold, yeast, milk particles etc can get into the motors of most store bought pumps, and blown into your
milk when you use the pump. Every woman should have a new one. And they need to be replaced anywhere from every 3 months to every 3 years depending on quality. It isn't an item to share, EVER! Rental pumps are different because the motors are sealed against contamination. NO pump you can buy at Babies R Us are in this price category. Including the Pump In Style. It's a great pump, but it is only a $300.00 item and meant for ONLY one person to use.