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Identity bracelets are used in many hotels and tourist complexes, to identify that the person wearing one is a paying guest at the complex and so can have access to the pool etc. Especially in hotels that offer "todo incluido".
It's very little money: about €1.60 at current exchange rates. So it can't be anything very valuable. The price seems quite compatible with bracelets or wristbands. They could just be souvenirs. As Cecilia says, they're quite a speciality in Colombia, so maybe they're something visitors are keen to acquire.
It is certainly bracelets. Colombian bracelets are well known and they are called "manillas", 151000 hits on Google: https://goo.gl/B2SEQk
Unless the apartment is part of a resort, they would not have ID bracelets. Can you provide more context?