Recycled polyester chips are often more expensive than virgin chips due to several factors.

Processing Costs: The recycling process involves additional steps such as collection, cleaning, sorting, and reprocessing, which add to the cost. (And the cost of high-quality bottle flakes is not cheaper than PTA+EG cost.)

Quality Control: Ensuring consistent quality in recycled materials requires rigorous testing and sorting, which increases expenses.

Environmental Regulations: Compliance with environmental standards and certifications for recycled products can incur higher costs. Recycled polyester chips need Global Recycled Standard (GRS) and Transaction Certificate (TC) certification.