Looks like we won't have to import that Dragon Quest collection after all. Square Enix announced this morning that the re-releases of Dragon Quest I, II, and III will be releasing worldwide on the Switch. This will actually mark the first time the games have been released on a console in Europe, but we won't need to jump through hoops to change eShop regions or deal with import fees.
There doesn't seem to be a physical version available, though. Thankfully, the prices aren't too bad on each game. Dragon Quest is going for $4.99, II will be available for $6.49, and III can be had for $12.49. All three will be up for purchase on the eShop starting September 27, 2019.