[Translation from Japanese to English ] I already have one, but it would take a little while for me to get the additi...

Original text

1冊は既に持っているのですが、
追加で仕入れていたはずの仕入れ元から連絡があり、
当初の予定では3日で私の元に届く予定だったのですが、
もう少し時間がかかってしまうそうです。

お待たせしてしまいそうなので先に1冊をお送りして、手元に届き次第もう一冊を送付いたします。
よろしくお願いいたします。

Translation / English

I already have one, but it would take a little while for me to get the additional pieces because I was told that it would take a little more from the supplier who had expected to keep the additional items. Originally it was expected for me to get the items in three days.

As it seems that I may have you waiting so long, I am sending one piece at first, and I will send another one after I receive it with me.
Thank you in advance.

Translation / English

Though I already have a copy of the book, I have heard from the purchaser and learned that the delivery of the book I have ordered will take a few days more instead of the original three days.

As I think I will keep you waiting, I have decided to send one of the books first to you and you will receive the other as soon as I get it.
Thank you.

Translation / English

I am having one copy of that book but, I have ordered additional copy of it.
It would reach to me within 3 days.So it will take some more time.
So I will send one copy fist and next copy will send you as soon as I receive it.

Thank you.

Translation / English

I have already one book,but
I got a message from the retailer which I made an additional order.
And it will take a little longer time to get it than initial schedule 3 days.

I will send one book first because it needs more time to make you wait, and
I will send next one more book soon after I get it.
Thank you for your understanding.