The stamps of La Agüera are not rare, typically costing about US$1 either used or unused, but because of the small population (probably fewer than 1,000 persons) and short period of validity, non-philatelic uses on cover are likely to be hard to find.
The stamps of La Agüera are not uncommon, typically costing around US$1 whether used or unused, but due to the small population (likely fewer than 1,000 people) and short period of validity, non-philatelic uses on envelopes are likely to be difficult to find.