There are others too, I just searched for "round prices up browser extension"
I rarely see it in Europe, and I think I've never seen it in Scandinavia.
When I was in the (US) military, none of the vendors like the base exchange or on-base bars or restaurants overseas used coins smaller than a nickel (5 cents). It just wasn't worth shipping pennies overseas. The one exception was the post office. This was ~2005, so people still used cash.
I have no idea what part of Scandinavia you're talking about, but in Sweden this type of pricing is used all the time.
Right now I just opened a random page of prepared food for one of the big-3 supermarkets and I can see Tortellini for 35,90kr; Gnocchi for 28,90kr; Tikka chicken for 56,90kr.
If I go to another random page for kitchen appliances (Elon) I can see a whole range of items for 2995kr (fridge) 5995kr (dishwasher) and so on - infinitely.
These are exactly equivalent to the .99 price manipulation psychology.
So tired of the self-righteous "in Scandinavia we don't do this" crowd.