Just for a laugh, decided to run the numbers.
Taken from Banx.io trade history, this is all the trading for the last 24 hours:
Banx Price Quantity BTC cost
83417 Buy 0.00671000 69.00000000 0.46299000 Jun 18, 2015 7:02 PM
83413 Buy 0.00671000 55.00000000 0.36905000 Jun 18, 2015 5:32 PM
83408 Buy 0.00671000 145.00000000 0.97295000 Jun 18, 2015 4:00 PM
83406 Buy 0.00671000 90.00000000 0.60390000 Jun 18, 2015 2:32 PM
83405 Buy 0.00671000 128.00000000 0.85888000 Jun 18, 2015 1:01 PM
83403 Buy 0.00671000 129.00000000 0.86559000 Jun 18, 2015 11:49 AM
83400 Buy 0.00671000 136.00000000 0.91256000 Jun 18, 2015 10:29 AM
83398 Buy 0.00671000 127.00000000 0.85217000 Jun 18, 2015 9:03 AM
83397 Buy 0.00671000 149.00000000 0.99979000 Jun 18, 2015 7:58 AM
83396 Buy 0.00671000 96.00000000 0.64416000 Jun 18, 2015 6:57 AM
83395 Buy 0.00671000 97.00000000 0.65087000 Jun 18, 2015 5:51 AM
83394 Buy 0.00671000 57.00000000 0.38247000 Jun 18, 2015 4:30 AM
83393 Buy 0.00671000 58.00000000 0.38918000 Jun 18, 2015 3:26 AM
83392 Buy 0.00671000 144.00000000 0.96624000 Jun 18, 2015 1:58 AM
83391 Buy 0.00671000 135.00000000 0.90585000 Jun 18, 2015 12:25 AM
83390 Buy 0.00671000 93.00000000 0.62403000 Jun 17, 2015 11:21 PM
83388 Buy 0.00671000 62.00000000 0.41602000 Jun 17, 2015 10:19 PM
83387 Buy 0.00671000 74.00000000 0.49654000 Jun 17, 2015 9:01 PM
83385 Buy 0.00671000 1.40000000 0.00939400 Jun 17, 2015 8:45 PM
83382 Buy 0.00671000 72.00000000 0.48312000 Jun 17, 2015 7:29 PM
Being too lazy to get the calculator out, I estimate total BANX trading on Banx.io at around 13 BTC / $3250 over the last 24 hours.
CMC shows 62 BTC / $15,500:
http://coinmarketcap.com/currencies/banxshares/#marketsEr....anyone got a sane explanation ?