The price in only hype thing, EOS team use ETH from crowdsale to hype market, they send 20000ETH to Bitfinex and 2000 ETH to Kraken to do hype, for yunbi.com, lixiaolai is an investor/co-owner and he is member of EOS team too, so the hype in yunbi is crazy.
https://etherscan.io/address/0x9937dbb2128b55c44d8af7bf36fd76796a814cf4#internaltxIn summary,nothing much, just hype with the money from investors, not sure whether this is legal or not.
If that's true, then that is pretty scammy for sure.