The idea of the "pile of loot" option is great - but you're really not saving a whole lot. I had several items sitting in my pile for months and ended up just shipping it without adding in any more items. Everything I added to the pile just jacked up the shipping cost anyway.

Adding a G1 Thrust to a sizeable parcel (which I had already forked out $50 to ship express) increased shipping price by $7. I could've just bought it off ebay and had it shipped on its own for that.