Coinbase is not an exchange, so it doesnt matter about their trade volume. Once you buy, that price you bought at is locked in regardless of rise or fall.


Coinbase will let you link with a bank accout for Bitcoin purchase. They have many options to allow you to increase your daily/weekly purchase through them. Bank deposits of course can take up to 4 days with it really being about 5 days on average. You can link your Visa and get instant purchase straig to your wallet (which they provide). The security is great, you can set it to need a sms code on every withdraw. All that you stated above can be acheicved by just sending what you purchased to which ever avenue you wish to achieve. Coinbase will allow you to send you bitcoin into your bank account, but once again the price you sell is locked in, so if it goes up 200 over night, you are out of luck.