https://www.americanfreight.com/
https://www.roomstogo.com/
https://www.biglots.com/

https://www.yelp.com/biz/bargain-city-furniture-and-mattress-no-title

Also always good to search Facebook Marketplace and Craigslist as many local retailers post on there. Or search "Moving" or "Divorce" if you want to find motivated sellers of preowned sets