China and dishware
Even good-quality china and dishware can be difficult to sell for any significant amount of money nowadays.
Replacements Ltd. and the International Association of Dinnerware Matchers will buy china and dishware. These options might offer the easiest way to get a decent amount for your china.
Of course, these sites are going to turn around and sell the items to others for a significantly higher price. If you want to cut out the middle man, you can try selling on eBay. But, as with antiques and collectibles, your listing can get lost in the competition.
Research the going rate for your particular brand and style of china. Then, consider selling individual pieces rather than the whole set to maximize your profits.