It looks like Coinbase uses the average across Bitstamp, BTC-e, MTGox, and Huobi...
If you add them all together and divide by 4 you get a number very close to Coinbase's sell price...
Topic: Coinbase buy price... (Read 523 times)
...is notably higher than I could get on the exchanges I just noticed (me selling.)
Not sure what that means, but it is not something I've noticed very often before since I've been a customer of theirs. I assume that it means that they wish to have BTC for their buying clients, and I would expect that by now their algorithms are sufficiently advanced to reflect their own market dynamics reasonable well (and adjust safely and reasonably quickly.)
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