On what kind of things can you get a buy-one-get-one-free (BOGO) deal? Clearance socks at a department store? Expired cans of beans? A coffee at Starbucks once a month if you go at a very specific time? Nothing big or alluring.
That's generally true, but there is one significant exception worth noting right now. Amtrak is offering BOGO train tickets all over the country. During its Valentine's Day sale from February 13-17, you can get a free coach ticket when you buy one for travel between March 9 and August 30, 2020. Plus, there are no blackout dates. Just drop in the code "V214" at checkout. (The sale is among the best Presidents Day sales.)
The BOGO deal is available for "most long-distance routes," per the Amtrak announcement, as well as the Acela, Adirondack, Carolinian/Piedmont, Cascades, Downeaster, Downstate Illinois Services, Empire Service, Ethan Allen Express, Heartland Flyer, Maple Leaf, Michigan Services, Missouri River Runner, Northeast Regional, San Joaquins, Valley Flyer, Vermonter, and reserved sections of the Pennsylvanian and Keystone Service.