If you happen to live near a Big Lots, you might swing by and check out their DVD collection. Along with their normal $5 DVDs and and $8 Blu-ray discs, I found several complete television seasons for $10.
That’s Family Ties (Season One) and Twin Peaks (Season Two) for $10 each. I already own the Family Ties, and would have picked up the Twin Peaks set if I had been able to find Season One of it as well. I also found Season Three of Gomer Pyle and a few other random oddities. If you’re a fan of older television shows, you should enjoy digging through their stock.