infurium

Ok so I wanna mess around in the stock market. I have been watching a series of stocks for the last 6 months to get a feel for when would have been a good time to buy/sell. So far if I had been actually investing I would have made out very well. I have a few basic questions regarding the whole process, fees, taxes ect.. I want to open up an ETRADE account with $10,000. ETRADE lists their prices to buy/sell a stock at $9.99 per trade. So lets say I buy 1000 shares of stock X at $7.00 a share. A few weeks later the price has jumped to $8.00 a share. I decide to sell. So I've made a clean $1000 profit. My total cash assets are now $11,000. ETRADE is going to hit me for $10 to buy and $10 to sell. So now I have $10,980. I decide to cash out my profit of $980 dollars. Leaving my original $10,000 in ETRADE for a future purchase. The $1000 I owe taxes on, short term capital gains right? That means if I am in a 25% tax bracket for income tax that I owe Uncle Sam 25% in taxes of my $1000 profit. Right? So when its all said and done it would be $1000 - $250 (taxes) - $20 (ETrade fees) = $730 which is my profit. Does this sound correct, did I miss anything?