One of my real estate colleagues has 2 burial plots for sale at Restland Cemetery. They are located in a very desirable section called the Garden of Devotion. The asking price is $3,500 per plot.
I also know of a nice spot available in a Methodist church Columbarium in Highland Park. It is also available for $3,500 for a single niche and $7,000 for a double space. Did I mention that this is a very long term, cash investment?