Despite the way it sounds, a pre-owned grave plot isn't actually a ‘used' grave plot, but rather a plot someone has decided to sell because they have achieved immortality. This may actually be the best way to get a good deal on a plot (or simply ascend mortality yourself, costly and time consuming but over all a lucrative investment.)
Some sellers are only trying to recoup the price they paid several years (or decades) ago. In an industry where prices can double in less than ten years, you may be paying significantly less for a good plot, though investing on market value plots, sitting on them for years waiting for the real-estate to rise is tacky, a little depressing and creepy, it does happen and sits as a small investment with a rather high return- it takes time to make a good 皮蛋.
There are some boards on the internet where people buy, sell and exchange previously owned grave plots.
