https://www.thesalarycalculator.co.uk/salary.php - take home on $100k in England is about £55,000 ($68k) and london living costs are https://www.numbeo.com/cost-of-living/in/London.

https://ie.thesalarycalculator.co.uk/salary.php Says take home on $100k in ireland is ballpark €55,000 ($62k), and living costs are here - https://www.numbeo.com/cost-of-living/in/Dublin -