In terms of shopping around I found these sites to be useful:
https://switcher.ie/
http://www.bonkers.ie/compare-tv-broadband-phone/
Also boards.ie is useful for getting feedback on offers and service quality etc.
And always ask service providers (that you are with and thinking of leaving, or are going to) if they can offer you anything extra in terms of discounts or services.
I recently ditched my UPC TV package and am just retaining their broadband/phone service.
They offered me my existing broadband/phone package (120Mbps, anytime calls to landlines/mobiles, 400 international mins etc.) for €22.50 p.m. for 4 months and then €45 p.m. thereafter. 12 month contract whereas most others only offer 18 months.
I'm replacing the TV service with a FTA satellite dish, Saorview aerial and a Linux triple input receiver box. Once of payment of what I'd probably pay in a year or less to UPC for TV services. (I realise that I won't get certain channels but that doesn't bother me).
I'll probably spend more time playing with the gadgets than actually watching TV!
If I ever get the time to watch movies I might consider the likes of Netflix (or Amazon Prime?).