Steam currently has a sale on The Sims 3 with up to 75% off the base game, expansion (excluding Island Paradise) and stuff packs. You can also save a massive 85% off The Sims 3 Bundle which includes The Sims 3 Base game, Generations, Pets and Seasons Expansion Packs.
This sale is on from now until 19th February so don’t miss out and grab those missing packs while you can on Steam!