Whenever you send a research paper or an article to a journal publication house, it will be sent to peer review experts, who will assess the value of the paper and determine if it is fit to be published in the said journal. If your paper does not have the required format, then there will be a high probability of the paper getting rejected.
The only way, in which you can avoid such a calamity, is to get the paper peer reviewed by subject matter experts from your domain before sending it to a publication house. By taking this service, you will have an idea of the comments that the peer reviewers will make, and would have already made the improvements that will make the paper publishable. Even if, you have not been able to attain the required scientific standard, or if the chapters are not in order, then you can undertake thorough revision and then send the paper. If your paper is rejected once by the editorial board of a reputed journal, then it can really tough to get it published, even in other journals. Considering this challenge, it is advisable to avail peer review service while you still have time.
Another reason why you should choose such a service is that it is a viable option if you are not sure of the formatting style of the journal that you are targeting. It may happen that the research paper you have written is in the Harvard style, and the journal that you target follows the APA format. It is not possible to learn about a new style in a few days. So, by taking help from peer review experts, you can get the knowledge about required style and make the changes that are required to comply with the rules.
Finally, the presentation of the paper will also be enhanced manifolds if the peer review experts go through it. Someone who is new to your research paper will be able to give valuable inputs, which you will not be able to think of, due to your familiarity with the work.