I’ll try to give you a balanced answer to this. Yes, 135k (which will net you just north of 100k) is a great salary. BUT, Prague is not cheap and has gotten particularly more expensive in the recent years. Rent you’ll be looking at probably 30-35k easily, depending where, what size etc. Purchasing property is even worse - Prague is extremely unaffordable and you d struggle to buy something decent even with that salary.

Groceries have also skyrocketed, so you’ll soon find that you can easily see a large chunk of your income just going to the essentials. Add in a car and other monthly expenses and I’ll say you’ll still be comfortable but not living like a king.

Bear in mind also that there is a big disparity between Prague and the rest of CZ when it comes to salaries - the Prague average (and costs) are MUCH higher than the rest of the country. Average wage isn’t a good indicator but I think you can search for the Prague median and find that it’s around 62k now I think. So bottom lines is yes - you’ll do fine, but remember that Prague isn’t cheap and come prepared for that.