What are good ways to sell a CZ registered 2015 California T in EU ?

So I have a 70tkm Cali T, bought it new in early 2015 from Germany and it's time to let go as I'm moving from Czech Rep. I had two damages over the years, both repaired by Ferrari.
I tried a few local car shops in CZ, they were interested in a commission sale but given that I'm not in Prague anymore that could mean I'm in trouble IF they don't sell it.
I'd have to get back there, without insurance to move it again.

Right now it's still CZ registered.

So I am under a bit time pressure given I can't keep it registered much longer and I do not want to import it to my new Austrian residence.
I'd have to pay 30% taxes, that only makes sense if I keep it for a long time.

Are there reputable big buyers interested in such cars that I could contact ?
I considered "mobile.de", it's not free and I'm not interested having a hundred people contact me for a "testdrive".