Manage a team of 12 players (7F, 3D, 2G) and you have 50M of cap room to play with. Once the hockey season starts, your team accumulates fantasy points based on real life performance of the players on your roster. But the value - or price - of a player is dynamic and will change daily based on how often a player is added (bought) and dropped (sold) within all of the Dobbernomics fantasy leagues.
Using the buy low/sell high strategy, you can increase the total value of your team, therefore giving you the chance to acquire better players and hence increase your potential fantasy points later in the season.