Amazon account review : Roll and reserve ??? Help

[Etycoon]

What exactly dose Amazon mean by roll and reserve , because to be frank there explanation is rubbish!!!!

A rolling reserve will be applied to funds in your seller account.

The reserve will be equivalent to your gross sales amount for the preceding 7 days. Based on your order volume, the amount of the reserve may change daily.

You can view your account balance and reserve amount in the Payments section of your seller account. When your account balance exceeds the reserve amount, funds will be available per your disbursement schedule.

Account reviews are intended to ensure the timely shipment of orders and compliance with our selling policies. Please continue to fulfill orders and list only items that you are able to ship by or before the Expected Ship Date.

I need this explained can anyone help

[alnev]

Well, the rolling reserve is exactly what they say it is
Let me give you an example, maybe it's going to be easier to understand.

You start selling on the 8th of the month, the reserve is what you sold between the 1st and 7th = 0.
On the 9th your reserve will be your sales from the 2nd to 8th = your sales from the 8th.
On the 10th of the month it's the sales from the 3rd to 9th = your sales from 8th and 9th.

I think you can understand now.
One thing to keep in mind is that this is only theory, this is what Amazon is telling you. Actually your money starts coming out from the reserve after about 10 days.