you answered your own question mate. All I see is a character place holder. If most people dont even have that key on their keyboard.....think about that for a moment....
Most reg fee/zero value domains, people have all the keys on their keyboard and they are still worthless.
Thats what I Was thinking although I did see ἱ.com go for a substantial amount of money not so long ago. Surely it would be some use to the country that the letter is from (Georgia)?