For years, I've bought on eBay but I'm now enjoying local Facebook "Buy, Swap and Sell" groups.
Everything and anything can be found on these sites, there is no postage or advertising, and you are able to look before you buy. I have found wonderful bundles of children's clothing, toys, bikes and furniture. And there's the added bonus of cash I've made by selling stuff I considered junk!
Negotiation is always possible, especially if something has been listed for a while.