Refund fees

I'm just analysing Amazon fees and wanted to check the following is correct.

EG. item is £39.95 gross, a refund of -£33.29 shows on our transaction statement which is the net figure..

If this order then shows in the Reimbursement report the figure reimbursed to us is £22.18.

The seller / referral fee of £4.07 is credited back to us.

The remaining amount of £7.04 - is this the FBA fee waivered plus an % admin fee??

Thanks

Kate