Agreed, there is a limited market for resale but the intent of the safe is not for preserving the resale value but to ensure I can keep them for years to come. If you approach the hobby for a love of the chips, than intimately "breaking even" is less the objective than compiling a collection of interesting pieces of history.
There are those that view it more from the revenue generating side of things and some manage to make a living out of it. However their point of view on displaying, protecting and purchasing is from a far different perspective.