Jean, this is really cool! 
I looked up 3 year-old Acer laptops and it worked perfectly:
What kinds of use-cases to do see for this tool? 
I did encounter a few issues, e.g. searching for an object with an age, then deleting the object age produces an error.
Error message
File "/home/appuser/venv/lib/python3.7/site-packages/streamlit/scriptrunner/script_runner.py", line 443, in _run_script exec(code, module.__dict__) File "/app/reparatorai/reparator.py", line 84, in <module> useful_data_age=useful_data[np.abs(useful_data.product_age - int(my_age))<=1]
And it would be really nice to filter the brand drop-down menu by the object type (to avoid having to go through the full list of brands).
Really nice little app though!