6000 euros will get you an good second hand Stealth. I paid far less than this for mine, but it's a pre-f16 version. The problem is that the ones coming onto the market (mostly in the UK) are snapped up right away and you never see them in time.

Blades are rarer, were more expensive to start with, and came to the market in Europe later, so they are still somewhat expensive.

Drop an email to John Pierce at stealthmarine, if there is a used Stealth somewhere he'll probably know about it.