Got a little hilltop cemetery near my patch of woods.
Just set out a brick, to mark and save you a spot with your family there.
The fella that looks after the place for the church digs the hole with a back-hoe, gratis.
Then your folks will usually cover you up.
Make your own box, and throw in a granite marker from the local craftsman, and you got yourself a nice little piece of real-estate for less than $500.
GR