Using your coinbase account, you can reap the benefits of the BTC price going up after its slight downfall during the past 24 hours.
While looking at the above graph you can see that the price of BTC on Coinbase dipped to $13,130.14 at 13:41 pm EST before skyrocketing backup about a minute later to the $14,500 range. So if you literally had one bitcoin (BTC) at 13:41 pm EST time, and waited about a minute, you could have sold the BTC and earned approx. $1,300.
Is this a glitch? Don't know. I've noticed this slight dip occurring even within seconds for BTC as well as the other altcoins being held at Coinbase: BTC, BCH, ETH, LTC.
Here is another view of BCH taking dips every so often:
The graph shows BCH always hitting a low of $2,500.98 then going up to about the $2,900 range. That literally means a $400 profit within minutes.
This pattern was recognized right after Coinbase paused buying and selling of coins for a moment due to "high traffic." So could this be a glitch in their database? Maybe. Can you profit from it? ahhh....yeah!
I still notice the dip in price of BTC to the $13,100 range when trying to buy BTC during checkout. You can still catch the dip after several refreshes. It does go quick within seconds. But after several tries, I was able to get the price at the $13,100 range and sell right away in the $14,500 range. Be careful though, coinbase's checkout process has two phases. Ensure that the last phase, the "confirmation" page also recognizes the actual lower price you are hoping to buy at.