GamersGate US has what appears to be a weekend sale on Sims games.
The Sims 3 = $10.20
The Sims Medieval = $10.18
The Sims 3 Ambitions Expansion Pack = $10.18
The Sims 3 World Adventures = $10.18
The Sims 3 Late Night Expansion Pack = $10.18
The Sims 3 Generations = $13.58
The Sims 3 Pets = $19.98
The Sims 3 Outdoor Living Stuff = $6.78
The Sims 3 High End Loft Stuff = $6.78
The Sims 3 Fast Lane Stuff Pack = $6.78
The Sims 3 Town Life Stuff = $6.78
The Sims 3 Deluxe = $16.98
The Sims Medieval: Pirates & Nobles Adventure Pack = $10.18
The Sims 2 Double Deluxe = $4.99
The Sims 2 Best of Business Collection = $4.99
The Sims 2 Apartment Life = $4.99
The Sims 2 Bon Voyage = $4.99
The Sims 2 Free Time = $4.99
The Sims 2 University Life = $4.99
The Sims 2 IKEA Stuff = $4.99
The Sims 2 Mansions and Gardens = $4.99
The Sims 2 Teen Stuff = $4.99
The Sims 3 Plus Pets = $29.98
According to this page The Sims Medieval activates on Origin.