You have to look at it as lower end used furniture. It may be an upgrade to the buyer, but there is little value beyond the prices realized at a thrift store for similar items. What it came out of and how nicely you kept it up, means nothing to a buyer. If it's damaged it may not be worth the hassle of listing.
On the other hand, specialty items that are custom built can be worth a lot more. An air-ride chair with Italian leather and 12 way adjustment may be worth 50% of retail, but a dinette is a dinette and worth less than $100 in my area.