OTT Supergirl offers

Now you can subscribe to direct streaming of supergirl directly from Warner Bros/DCTV.  www.owndctv.com/?supergirl
itunes prices $2.99/episode $24.99/season HD
Google Play $1.99/episode $24.99/season HD (was $39.99)
Microsoft Store  $39.99/season 4   $29.99/season 1-3 (each)
Vudu  $1.99/episode $29.99 /season
Promo video
en.wikipedia.org/wiki/Over-the-top_media_services
This might be good if you wanted to binge watch  or didn't have access to free or paid TV channels to watch the shows.   It's possible the paid streams are commercial free.

itunes and google play both have reviews written by users
itunes users seem to hate the show and give Supergirl 1 star  (29 ratings)
Microsoft Store and Vudu are unreviewed
Google Play users give Supergirl 4.5 stars (8461 reviews)
I haven't tried this myself  

It would be interesting to learn how the direct marketing of content to consumers compares with or without broadcast network.   Would guess the licensing fee to a broadcast network must be a lot more than $20-40/season. But how much per subscriber?    Would guess it's a lot less per subscriber, and then more datamining is needed to figures out the viewers per show.
FYI Warner Bros is now a subsidiary of At&T June 14, 2018  ir.timewarner.com/phoenix.zhtml?c=70972&p=irol-irhome

I suspect very soon all the CW shows will leave Netflix for the DC Streaming channel.