Amazon offers Prime members This is Us: Season 1 on DVD for $19.62 with free shipping. (Target charges slightly more with in-store pickup.) That's the lowest price we could find from a major retailer that ships from the U.S. by $5.

Don't mind waiting? Muyang2017 via eBay offers it for $9.90 with free shipping. It ships from China and may take up to four weeks to arrive.