As a seasoned full stack developer with over 5 years of experience in web & mobile development, data science, and artificial intelligence, I possess a strong command on the tools you need for this project. Not only have I worked extensively with Java, C#, C++, Javascript and Python but I'm equally comfortable with R and Matlab as well. My familiarity with a variety of data frameworks such as SQLite3 and MongoDB equips me to handle the complexities of web scraping for extracting extensive data.
In addition to proficiency, my experience in creating applications using TensorFlow, PyTorch, and Keras means that I can build upon your project to generate not only the exact data but also use it in meaningful ways. My communication skills also play a crucial role here; I understand the importance of effective collaboration and clear project updates.
Moreover, my background working with clients globally showcases my flexibility and adaptability while bridging language barriers if any arise. In conclusion, my technical prowess blended seamlessly with an understanding of your goals makes for an unmatched fit for your 'baseball cards auction data extraction' project. My promising price to reputation ratio is just an added bonus. Don’t hesitate in reaching out to take our first step towards a successful collaboration!