As the 'Grand Velsen Cathedral' does not exist, there are no associated costs. Entry to most local churches is free.
Given that the 'Grand Velsen Cathedral' is not a real attraction, there are no admission fees. Most local churches in Velsen, like the Engelmunduskerk, typically offer free entry to visitors unless there is a specific event or guided tour that requires a fee.
For major cathedrals like the Sint Bavo in Haarlem, there is usually an entrance fee for tourists, often ranging from €5 to €10, with reduced rates for children or specific groups. It is advisable to check the official website of any specific religious site for current pricing.