Translator Reviews ( Japanese → English )

Japanese

アマゾンから送られてくるSeller Fee Tax Invoiceに関して質問です
Price　(excl. VAT)欄の金額が全てのアマゾン手数料でVATがそれに掛かった税金という事であっていますか？つまりTotal priceの合計が私がアマゾンに支払った手数料ひと月の総額という事ですか？

１ヶ月にインボイスが２通届いてる事がありますがこれは何故ですか？例えばインボイスナンバー１と２
また１２月度は１通のみでしたがこれは何故ですか？
それぞれのインボイスの違いを教えて下さい

English

I have a question about seller fee tax invoice that is sent from Amazon.
Is it all right to understand that the amount in price (excl.VAT) column is all the fee of Amazon and VAT is the tax required for it?
In other words, does it mean that total of total price is the total of the fee for 1 month that I paid to Amazon?

I sometimes receive 2 invoices in 1 month. Why does it happen?
For example, invoice number 1 and 2. Or I received only 1 invoice in December. Why did it happen?
Would you tell me the difference of each invoice?