Here's a secret no one will ever tell you when you become a first time mom. Buy EVERYTHING used for items your baby needs during his first to second year of life because that darn kid will grow out of his clothes so fast that your head will be spinning when the next day he is too big for that six pairs of pants you just bought him the day before.
And he will be so unpredictable in what he likes in toys that $100 you just spent on toys you THOUGHT he would spend months playing, he doesn't even acknowlege its existence after 15 minutes.
Hence the smartness of shopping at a store like Kid to Kid- buy it, let your kid play with it- then bring it back for consignment. The store is really well organized and most of the items look new. The clothes if not bought on sale can be not so much a bargain because a lot of them are designer brands but if you get to the store on a sale day, then you are in luck!