If you're looking for great baby items for cheap, look no further than Craigslist. According to Wikipedia, Craigslist is "a centralized network of online urban communities, featuring free classified advertisements."
To find the Craigslist for your city, just google "craigslist [your city name]."
Then, type the item that you are looking for in the search box. Good items to try - baby clothes, swings, slings, strollers, and changing tables.
If you find an item you like, you can send a message to the owner and set up a time to see the item in-person.
Craigslist is very cool in my book.