[mothered]

one thing that might come in handy to people when SEing from amazon is what is classed as High Value/ Risk
This order however at £550 is classed as a high value item and needs another teams approval/ authorisation.

So i think maybe the cross over point is somewhere between 400 and 550... anyone else have any insight on this?

There's a lot of variables, too many to mention. If suspicion Is not raised, the value Is Immaterial.

One thing to remember, Is that as far as the retailer Is concerned, every SE Is a legit claim. If you've formulated and executed your method that represents and Is consistent with a legitimate request, there's very little reason to decline It.