Walmart has operated a liquidation marketplace since 2007 to sell bulk lots of returns and other excess inventory in bulk lots. Resellers have been able to bid on lots in multiple categories with starting prices of $1 for most of that time.
Recently, they went through a bit of a transition with the electronics and salvage TV's on the site in order to ensure thorough compliance with environmental standards regarding e-waste. Now that this transition is complete, you will find lots of these products once again starting at $1 on the site.
In addition, you will find products in these other categories: furniture, appliances, bikes & ride-ons, computers, and mixed lots of some combination of the above. The site is a great resource for resellers and I highly recommend you get registered to bid -- it's free.