Depends if market forces a.k.a.@Plumbersmateuk results in the fee dropping down to only a few beer tokens! In all seriousness, I am giving this a lot of thought.
Like most forms, in of itself it's not especially complicated, but is time consuming and tedious, and the more receipts you have the more time consuming it becomes (hence the scale of fees that seem to be applied).
As with other aspects of self build you have to weigh up whether you value your time as equal to or greater than any fee, and that consideration may well be different to your normal assessment of such circumstances depending on how exhausting you have found the self build process to be.