What are the most expensive burial vaults and how expensive are they?

The most expensive burial vaults currently (2014) manufactured in the US probably are:

- the 10ga (108oz) copper Custodian metal vault by Clark (weighing around 600 lbs and offered at prices around US $ 16,000 retail

- the 90oz triple walled Bronze and concrete composite vault by Wilbert, which weights 3.800 lbs and is offered at prices between $ 8,000 and 16,000

- the Doric Olympian Bronze composite vault which consist of a concrete core and has an 48oz bronze outside and a 16ga inner bronze liner, resulting in a weight of 2,900 lbs and costing some $ 24.000.