I bought the BD set for $18 when it came out (from one of the Target B2G1F sales). It's worth it. I enjoy this series... I discovered there is what seems to be a good companion series on MeTV called Collector's Call. I haven't watched it yet, but I've heard good things. It's on season 2. Blair from Facts Of Life is the host...
https://www.metv.com/collectors-call