That's probably as good as you're going to get without negotiating with another supplier.
I've seen Sky offer TV, broadband and phone for 50 per month but only to new customers.
Here's the Eir offer currently on groupschemes:
eir Broadband + FREE eir Sport just €40 a month PLUS €50 Cashback
Great news! eir have teamed up with us to offer you superfast fibre broadband at their very lowest price! Exclusive to new customers, get eir Fibre broadband, unlimited home phone calls and FREE eir Sport for just €40 a month on a 12 month contract. Plus as an eir Broadband you can now stay connected outside your home, with access to over 100,000 WIFI hotspots nationwide for FREE.