Like a mistake with the system?

Thanks for your help magic
How do I give you a merit?

The top one (last transaction) is the one where I lost some btc and don't understand why

Thank you! yes below I posted my latest trading transactions. all of them were market orders.  starting from the bottom with oldest


Buy
BTC/USD
$237.00
0.02130958
$11,094.02
$0.59 fee
Jun 23, 2019 - 09:13:40 PM UTC

Sell
BTC/USD
0.02138985
0.02138985
$11,117.16
$0.59 fee
Jun 23, 2019 - 09:13:11 PM UTC

Buy
BTC/USD
$233.00
0.02138985
$10,865.85
$0.58 fee
Jun 22, 2019 - 03:15:07 AM UTC

Sell
BTC/USD
0.02138816
0.02138816
$10,885.03
$0.58 fee
Jun 22, 2019 - 03:14:57 AM UTC

Buy
BTC/USD
$199.00
0.02138816
$9,281.01
$0.50 fee
Jun 19, 2019 - 11:09:30 PM UTC

Thanks for the response Magic really appreciate it.

 do they take it out in usd or in bitcoin?

The only reason I ask is because I sold at high price and rebought at a lower price than what I sold for and lost a little btc on the transaction. And in a similar scenario before that I actually gained btc. Just confused on why I lost one and gained on another.

Hi I'm Scott and new to the forum and I have some questions about coinbase pro exchange. Whats the best way to calculate the taker fees to my order so I know how much it will be total in usd? Also is there a way to figure out at which price point I need to sell in order to cover the fees and profit? If I plan to buy for less than what I sold for is there a way to figure out at what price point I need to buy to cover the fees and still get a good deal? Thanks for any help and sorry if something similar has been posted before I could not find anything on it.