1.Buy low price,sell high price.
2.Watch R.O.A.(Return of Asset)(points/price),for example
A player total points:800 price:$40 800/40=20
B Player total points:700 price:$25 700/25=28
3.Buy potential players not famous players.
4.Do not trade oftenly.
5.Any position player whose price should not over $45-$50.