masternodes.online = 0.2 btc
tradesatoshi.com = 0.5 btc
southxchange = 1.5 btc
novaexchange = 1 btc
crypto-bridge = 3 btc
stocks.exchange = 0.5 btc

tradesatoshi.com - no volume
novaexchange = 1 btc - closed
stocks.exchange = 0.5 btc - scam with MN coins.
southxchange = 1.5 btc - last few listing cost around 4.5 btc.
crypto-bridge = 3 btc - ok.