Regarding the Grand Emporium at DJs, what I've done every year since Cafe Corner to guarantee that I get the exclusive set(s) AND at the reduced price (which usually goes live mid-November) is layby it at full price, then when it gets reduced take out the layby, refund it, and re-purchase it again. The staff are always more than happy to refund it and let you buy it again at the cheaper price. You have to pay $10 layby fee, but in the long run you'll save at least $40 (depending on how far DJs will reduce the Grand Emporium this year.
Also, keep a look out for a 25% off all Toys round about the end of November. DJs only does it for one weekend (last year it was one day only). You'll be able to get the Grand Emporium at the reduced price PLUS 25% off. I paid about $280 last year for the Grand Carousel (full price $399!)