The condition is very good - there's no damage to the metal, just natural dirt build up (around 10 years) which adds to the warmth. I haven't cleaned them for this reason but basic cymbal cleaner can be used to make them look and sound brighter again if that's your preference. 

These hats are fun to play and very versatile. I've used them for everything from jazz to rock to reggae. They cut through the mix but aren't overbearing either - nicely balanced, good all round hats.