[dognotdog]

Commingling is certainly something I wasn't aware of, it looks as if most consumers are in the same boat.

The idea that FBA doesn't actually get me parts from the seller I picked has never crossed my mind. I certainly wouldn't have bought quite a few things if I knew that possibility existed.

[lozaning]

It's part of their distribution strategy. I'd generally send 500 units to their warehouses a week. When you're dealing with quantities that large they have you split it up to several shipments to different warehouses throughout the country.

Usually it would be many small quantities near me, and then one large one to the other coast which they would then distribute amongst their warehouses on that coast themselves.

So as the number of vendors stocking inventory increases, the cost to amazon to distribute inventory widely enough to hit SLAs goes down because more of the cost is borne by the vendors.