Downloading 6 month sales history

[Jeff Mikos]

I'd like to build a database (i.e. Google worksheet) with 6 months of sales history for a large area in NW Illinois. I can search on Redfin and it results in almost 15k results. Their download feature only allows for 500 results or less. I contacted their customer service and they informed me that any search results over 500 wouldn't be able to be downloaded and that I needed to narrow my focus.  Instead of 30+ spreadsheets with 500 previous sales each I of course would prefer a single large sheet.

Without engaging a realtor or having access to the MLS, is this possible? I have been on a handful of sites where I can replicate the search results but no luck with the ability to download a file.

Thanks in advance for reading and replying.

Jeffrey