If you are a private seller, then why not give this a shot? It's free and might even have some of those zebra thingies! You can also post requests for exchanging or loaning fish. Please refrain from posting opinions or irrelevancies in this section.
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Just spotted this one on Planet Catfish. 13 adult zebras, 8 females and 5 males going for 2500 euros. Works out to £133 each, not a fantastic price but not far off current prices.
You might want to check to see if the guy is prepared to ship unless of course you're prepared to travel to Germany. Try and get some pictures of the fish too.
You might also check into his references. I've heard a few complaints about him. Nothing I know personally, but definitely substantial enough I'd be wanting to check for myself! Buyer beware, basically.