Whilw we werein the market for a pool table we looked at a lot of different ones. Most of them were broke down and you couldn't play on them. This was a major downside and we passed on all of the options that were already broke down.
A table mechanic once told me to never buy a table you can't shoot on first. A disassembled would be a red flag to most serious buyers. Just like a car you couldn't test drive. When you see a disassembled table, it's often difficult to see if all the parts are there. There may be missing screws or bolts, and the buyer wouldn't know until they have the table halfway put together.
Be realistic about what you're buying if it's a basic home table from a big box store don't let them make it out like it's a Gold Crown. It isn't.