As you asked so nicely, I paid 6,000 euro for it a year ago. It costs around 4000 euro when ordered from Suttner himself and there is a waiting list of 2.5 years.
31 key C/G Suttner for sale, number 609. Ebony ends, metal keys. Plays well. I have another C/G and I'm not playing this one enough to warrent keeping it. I'm based in Dublin.