Printing custom EU sized cards?

[Kurgan]

So I'm thinking the European sizes to fit with those of the cards for HeroQuest '89 (and 1990's Space Crusade) is 53 (or 54) x 80 mm size with rounded corners.

Does anyone know of a printing service out there that handles that size? BoardGamesMaker and MakePlayingCards unfortunately do not, considering it a "custom" size and charge a much higher fee to process a small batch of them.

I'm thinking the size above is harder to find but might correspond to a "business card" or ID badge type of size card. "Mini Euro size" is not a match.

I have been looking and not found any good sources, help is appreciated!