Go underground and explore the Columbarium of Pomponius Hylas in Rome! It (like all columbaria) exemplifies an ancient Roman business strategy: first, it was underground. Underground real-estate in ancient Rome was less useful and therefore less expensive–just like today! Second, people from the same family, multiple families, or burial clubs chipped in and shared expenses. Thus they purchased as a group what they could not afford by themselves. (How shocking! This means that Pomponius Hylas is not the only person in Pomponius Hylas’s Columbarium!)
Columbarium in general, and Pomponius Hylas’s specifically, reflect the working classes’ desire for a decent burial. They are also forerunners of the catacombs that everyone has heard of but, whose history, few people understand.