Sometimes time is very important and depending upon the book review service that you choose coupled with their work load, these things play an important part in reference to time. Keep in mind that some of that time is lost in the mail service between you sending your book and the book reviewer receiving it. However, the standard time overall for most book review services is 4 to 6 weeks.
Here are some pointers:
1) Send your book priority mail.
2) Follow up, ask if the book reviewer has received your book.
3) Follow up within 10 days after receipt of your book, request a approximate completion date.
4) Request a copy of your book review via email when completed.
Personally, I think 14 to 20 days after receipt sounds more reasonable. Of course page count should also be taken into consideration.
Christian Book Reviews