Newegg.com is running a special promo for The Sims 3 Supernatural & The Sims 3 Seasons. Add either game to your cart and use promo code EMCNBNG58, to receive $10 off your transaction! You must be registered to enter promo codes, so make sure to sign up. Promotion is only valid today, and can be used multiple times. One code per transaction.
Thanks to AznSensei for the info! 🙂