You can automatically transclude a page, describing what this merchant sells, to all Merchant mob-pages with this same class by editing Category: (Merchant Type)/Merchandise.
Some General Merchants are also listed here, but some are not.
Subcategories
This category has only the following subcategory.
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Pages in category "Potion (Merchant Type)"
The following 173 pages are in this category, out of 173 total.