Update: The jig is up!

YoYo.com is offering customers two coupons that stack which well net you a savings of about 37% once everything is said and done:

20LABORDAY will save you 20%
20OFFTODAY will save you 20%

Yep, stackable 20% coupons. The critically acclaimed 75021 Republic Gunship and the critically condemned 75020 Jabba’s Sail Barge are both $119.99 MSRP, apply both coupons and the price drops to $74.99 before tax. Free shipping threshold is at $35 or enjoy a $4.99 flat rate if your order is less. The catch is 20LABORDAY can only be used by new customers. Otherwise, you can only use 20OFFTODAY which is still pretty nice.