Really wonderful device but thats the point for no good offer, it is not a good device for daily use. It needs many updates and it has as well a fragile display.
Five years ago I would spend 1000Eur, and many others too.
Nowadays it is only interesting for collectors, but these people have already this device.
Personally I am still have interest but a different view of what it is worth.

So the best is to keep it or wait a long time for a fully working free kernel (this device will gain value again), or for a newborn rich Nokia fan.