Ah yes! I keep on forgetting that you don't live in the US. For me, it's much more feasible to buy smaller items and take advantage of the GA benefits.
Shipping costs, customs costs etc. have really fractured my buying...
- anime: Rightstuf (whenever there's a batch of $120-160 orderable on my wishlist), with a bit of Amazon UK now and then and very Rarely a NL DVD from Archonia
- manga: Archonia (3 times a year pichup@convertion, whatever was released of my ongoing series between Dutch conventions ), with a bit of Rightstuf or Bookdepository now and then
- merchandise: HLJ, with a bit of Amiami or eBay now and then
Very little overlap there.
 and the last few times being in despair at the lack of any new SZS manga being included in the batch... ;-(
PS: thanks for the tip about existing pre-orders and manufacturer sales.
More on topic: 1 or 2 more announced titles moving to pre-orderable and then I can go skimming through the daily deals and weekly specials for something to pad a May/June order...