Catalog value help

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Catalog value is the price that collectors can expect to pay for a stamp. Catalog value can be highly variable, going up and down with the marketplace.

In StampData (at present), catalog value is recorded as a very broad approximation, basically the "number of zeroes in the price", assuming a USD/EUR as base. So "e3" denotes a price in the 1-10$/E, while "e5" is a several-hundred-dollar stamp. It is also possible to record differing prices for mint and used, so "e*4o3" is is the tens range if mint, but 1/10 of that if used.

This has the advantage of stability over longer periods of time, lets the collector see where the high-priced stamps are, and avoids the false precision of a normal price tag.