As a seasoned developer specializing in game development, particularly with Unity 3D, I believe I have the skills and knowledge to seamlessly integrate Appodeal into your existing Unity project. With six years of experience under my belt, I have garnered deep and extensive knowledge on various ad plugins, including Admob and Appodeal. So, shifting from Admob to Appodeal shouldn't be a huge challenge for me.
Moreover, I've always been passionate about staying up-to-date with new technologies in the game development universe. I have strong proficiency in languages like PHP and Node js, which can prove beneficial for any backend necessities your project may have. My expertise isn't solely confined to backend systems; I'm also well-versed in VFX effects, 2D/3D animation, particle effect systems, and AI implementation - all of which could be advantageous for adding an extra layer of dynamism to your project.
Given the tight budget for this project ($20), you need someone that not only meets your financial constraints but also completes the job with utmost professionalism. That's where I come in. My commitment to delivering high-quality work on time, regardless of the constraints at hand, aligns perfectly with your requirements. I genuinely believe that if chosen for this project, my skills and dedication will allow us to accomplish your goal of implementing Appodeal into your Unity project within budget without sacrificing quality—without a doubt: a winning combo!