This vertical lives and dies by a calendar that repeats every year with almost no variation. Graduation, Halloween, the winter holiday run, and the spring wedding and shower season each produce a demand spike that begins weeks before the event and vanishes the day after, and the content for each has to exist and be indexed before the spike starts. A Halloween page published in October is a page competing with pages that were published the previous January.
Two very different customers share the same catalog. The individual host is buying one occasion, browses by theme and color, values inspiration and coordination, and decides quickly. The bulk buyer, a planner, a school, a venue, a corporate administrator, is buying repeatedly, cares about quantity pricing, lead time, and reorder convenience, and is worth many times more over a year. They search differently and need entirely separate paths, but most shops route them through the same product grid.
Price comparison is brutal because the products are largely undifferentiated and marketplaces stock them too. Competing on price alone is unwinnable, so the defensible ground is coordination and expertise: complete themed sets, quantity guidance for a given headcount, color matching, and the practical knowledge of what actually gets used at an event. That content also happens to be what earns organic visibility, because the marketplaces do not write it and the search results have room for someone who does.