The secret is training unique players. You might not think Sliverback's SF is worth what he is asking right now, but unique players with 120+ skill points can go for up to 5-7 Million (although typically 2-3.5 Mil). I was almost surprised to have multiple bidders for Macedonia at 3.2 M. SB's SF is also a defensive beast (how many players can you find with 19-20 OD, 15-16 ID, and 8-9 SB?). If you have the patience to train a player up to 125 skill points, then you can make a few million too (assuming a draftee or not overpaying for a trainee).