highbees

It works, but now you have to get your cash out of Coinbase, into your bank, and into BCT-e before you can do it again.

You could also simply buy on BTC-e, transfer bitcoins to Coinbase, sell on coinbase.

It's pure arbitrage.

CoinKite [0] is a new Bitcoin debit/merchant machine company based in Toronto. The key to driving Bitcoin's value is increasing its utility, and this is done by enabling every day transactions.

CoinKite will be interesting to watch.

[0] https://coinkite.com/

Although it would only be available for a fraction of prices, delta in "quantity available" between scrapes could provide some data.

Most websites don't relay this info to the end user but it could be used on those that do.

And you're on call to perform low skill IT support on top of it all.