Tips! Where do I get 'em?

[Fallingwater]

I want to get a few replacement tip sets for my CX300 and OVC T25 (they have the same diameter so the tips are interchangeable).
I don't know where to buy them, though.
Most real-life shops here in Pizzaland don't even know what canalphones are.
I need to find them online, but searching on eBay only returned listings for the actual phones, not for the tips.
Any advice?
Thanks...

 

[Andrew_WOT]

www.sennheiserusa.com has them. I am not sure if they ship to Italy though.