why does ebay not have first class shipping

Why does eBay not have first class shipping? eBay offers a variety of shipping options, but some sellers may choose not to use First-Class Mail for certain items due to size or weight restrictions. First-Class Mail is typically limited to packages weighing up to 13 ounces, so larger items or heavier packages may require a different shipping method, such as Priority Mail or FedEx. It’s also possible that sellers prefer more reliable or faster services, especially for high-value items, which could explain the absence of First-Class shipping in some listings.