Can I still buy a 15" MacBook Pro from Apple?

If you are in the US or other countries with access to the Apple Refurb store:

Refurbished Mac - MacBook Pro - Apple

If you are not in the US, to see if you have access. go to the Apple hone page and scroll to the end of the page where there are links to other parts of the site. Look for:

Yes from the Clearance /Refurb link: https://www.apple.com/us/shop/goto/special_deals