Whether it's a coincidence or deliberate, the 100 deck collection is paying homage to the 100th Pokmon
While it has always been popular, it has seen peaks so high that stores have had to temporarily ban sales so that people wouldn't get into fights over the right to buy them
Playing an extra land ramps you, and these decks usually have high land counts
This is a common concern for buyers, as highlighted by questions about "how much are you paying for duty, tariff, and import fees to the U.S." Master HS Codes: Ensure accurate Harmonized System (HS) codes are used for all customs declarations
Other than merfolk kindred decks, Deeproot Historian might be worth a look as a way to ignore commander tax for any deck with a druid in the Command Zone: Faldorn, Rashmi, Chulane, Kinnan and Tatyova are good homes, just to name a few