They're all over the place on the discounts but you can apply promo codes to certain sets to double dip.
They have the new Hobbit sets at MSRP and you can use YOYO30 to get 30% off, max discount of $20. You can get Bag End for $49.99 with free shipping.http://www.yoyo.com/buy/PromotionCode=LEGO20?icn=Y-SALE-featured&ici=featured
For additional 20% off, use promo code LEGO20, you must purchase at least 2 items from the list and there's a max discount of $40. You can also use the YOYO30 code but it's one time use for new users.
A couple of standouts and some soon to discontinue sets would be the republic frigate for $107.99, creator lighthouse for $36.99, Sith Nightspeeder for $22.49, Malevolance 110.99 before 20% off. I put the republic frigate and Nightspeeder in the cart and it comes to $104.38 shipped, not bad for $150 worth of Lego.
, contact me if you'd like to perform trades from my inventory. I'm looking for original genosian fighers, second version a-wing fighters and tie bombers. I may be interested in other sets so let me know what you have.