Hi,
I understand your project description.
I think you need add 500 products to a website using data from an Excel sheet and from manufacturers sites.
I am expert in Web Search, Data entry, Data processing, Excel, and more.
So, I think I can do this task very effectively. previous product list sample
https://docs.google.com/spreadsheets/d/1AA7o5Je21Kc5yEgYtxEaG2wJIa0wjm8epcr5McWOHGY/edit#gid=2058516805
If you hire me Then I trying to complete this task 100% accurate.
So, please discuss more over the chat.
Thank you.
saddam