I stumbled across OfferUp.com (I receive no money nor credit for referring them to you).
It is an easy way for people to 'Offer Up' items for sale in their house. For you (the Amazon or eBay seller), it's a great way to find local, profitable items you can buy for a song and then resell on Amazon or ebay.
I made a video just for you, that shows you how it works, and 'profit proof'. (To watch the video, you may need a browser like Chrome or Firefox. If it still doesn't play, you may need Flash installed).
Check it out and keep me posted!