The antonyms of "cheap dirty" are hygienic, spotless, clean, expensive, and pristine. A person who is looking for high-quality products that are free from dirt and grime can opt for expensive items that are both spotless and pristine. Hygienic items are those that are sanitized and thus, free from bacteria or other harmful germs. Clean suggests that the item is free from any stains, dust, or dirt. Additionally, products that are of high quality and made from premium materials are usually expensive, providing a sense of fulfillment and satisfaction to the customers who are willing to pay extra for their convenience and luxury.