Chris Co. is currently producing 1,000 surfboards annually. A supplier has offered to produce the boards for $300 each. Chris Co. incurs unit-level costs of $280 per surfboard. Chris also spends $25,000 on product design each year and incurs $50,000 of facility-level costs. If Chris Co. outsources the boards, they can lease their manufacturing space for $12,500 per annum. Chris Co.'s relevant cost per surfboard is?