At the moment there is a Crimbo Promotion 2 months for the price of 1 with NowTV
Just €15 for 2 months Cinema or Entertainment or kids or Sport
this is perfectly Legit and Legal .

if you know people selling for cheaper , then you know someone that is doing an illegal activity and of course they should be reported
and dealt with by police .
SkyGo is €6 extra a month on top of a valid sky sub ,
again if you know someone that is doing an illegal activity and selling Sky GO cheaper of course they should be reported
and dealt with by police .

That will answer all your questions i assume ??