The Croatian federation published details of prices in its participant member association (PMA) allocation, which is designed to be made available to fans who attend the most matches, with tickets at fixed rather than dynamic prices.
But the Croatian FA listed the cheapest tickets for the final on July 19 as costing $US4,185 ($A6,300) each.
Football Supporters Europe (FSE) described FIFA's approach as a "monumental betrayal" of fans.
It said based on the information it so far had available, fans faced paying 6,900 euros ($A12,000) to attend every match from the first game to the final via the PMA allocation - five times more than they would have paid to do so at the last finals in Qatar.
"Football Supporters Europe is astonished by the extortionate ticket prices imposed by FIFA on the most dedicated supporters for next year's FIFA World Cup," a statement said.
"This is a monumental betrayal of the tradition of the World Cup, ignoring the contribution of supporters to the spectacle it is.
"We call on FIFA to immediately halt PMA ticket sales, engage in a consultation with all impacted parties, and review ticket prices and category distribution until a solution that respects the tradition, universality, and cultural significance of the World Cup is found."
PMA allocations will equate to eight per hundred of a stadium's capacity for each match.
FSE pointed out that rather than adopting a standard price across all group matches, pricing appeared to have been calculated "dependent on vague criteria such as the perceived attractiveness of the fixture".
England fans said they were disgusted by "laughable" prices after it was revealed they must pay over Stg 5000 ($A10,000) even for the cheapest tickets to watch all of the team's World Cup games next summer.
In a post on X, the England Fans' Embassy said: "These prices are a slap in the face to supporters who support their team outside of the flagship tournament that appears every four years.
"A game for supporters, loyalty has been thrown out of the window and supporters of the participating nations have been completely let down."
