i just found this site.
seems a great chance for some arbitrage
https://www.x-crypto.com/recent trades BTC/USD
13:52:22 sell $577.49 ฿0.2844
13:52:19 buy $593.79 ฿1.30
13:52:17 buy $593.86 ฿3.20
13:50:16 sell $579.32 ฿1.04
recent trades LTC/BTC
08:28:36 buy ฿0.0083 Ł0.5300
08:27:59 sell ฿0.0079 Ł0.3100
13:47:40 buy ฿0.0081 Ł0.7700
13:47:13 sell ฿0.0079 Ł5.54