I've lived a few places, and my local library has given full free access to OED to all members. Just enter your library card number and library-given-password, and you are sent to an OED-hosted web app with full access to everything, all historical information - really deep rich full entries.
For example here in Wellington New Zealand, my local library access is at https://www-oed-com.wcl.idm.oclc.org/
If you're interested, just look up your local library's website, and find if they give members access.
Strangely enough, I was living in Oxford England for two years, and that was the only public library that didn't have OED access! But they had a free 3D printer, so fair trade.
Anyway - whenever I set up a new browser, putting in my local OED link is the first bookmark I create, and I use it every day. Highly recommended.