Being a software developer with 5 years of experience, I can guarantee you that not only can I create a powerful Python script for your project, but I can also meet all of your other requirements. First and foremost, my proficiency in Python programming language and Binance API gives me an inherent advantage when it comes to creating this script. Utilizing this knowledge, I can ensure that your p2p advertisement price will be updated manually as per the input provided, while maintaining the necessary security measures you require (i.e., API key, secret, and signature).
In addition to my technical skills, my extensive exposure to web and mobile app development will greatly help me understand and integrate the required functionalities into the script more effectively. Given my collaborative nature and experience working within timelines, I am confident that I can deliver the script within a week, ensuring its accuracy and efficiency so as to best serve your needs.
Lastly, I believe my adaptability and problem-solving skills will be valuable in addressing any challenges that may arise during the development process. My ultimate goal is to create a script that not only satisfies your desired specifications but also enhances your p2p trading experience on Binance. Let's discuss further and get started on this project!