[mothered]

@mothered  is not easyier to do a partial refound?Maybe buying 2 cheaper products and one with hight price and than say that just arrived the 2 cheapers one?

It can work, however packages are weighed on consignment, so the expensive Item would have to be extremely light.

If not and they open an Investigation with the carrier, and then establish that the weight of the package matched all 3 Items, the SE will fail.

Also I noticed that its being shipped through amazons own shipping service does this affect the process at all do I have to be carful what stock item I pick because of this?

As long as they stock It, that's all that matters- regardless how It's shipped.