Azure storage and ShareGate migration

I need to figure out how much it costs to migrate a shedload of data using ShareGate and its insane mode.

Insane mode requires Azure BLOB storage. Now I take some measurements,

Source Data2.938GB
Σ blob sizes2.936GB

The difference is probably attributed to the fact that the various pages and assets comprising of the OneDrive are included as a result of the API that i am using.

Intermediate BLOBS in MicroSoft Azure Storage Explorer

So we can see that the files that are to be migrated are largely copied to the configured Azure BLOB Containers without any compression taking place.