If you are talking about the front side markers, Kirbans has them for $48 a pair. Call the place below and he will give you the real part number and order them from there if ya want. I have used gmpartsdirect.com for good prices too but the shipping is a little high on the first item, still better that local non-discount dealer.
Vandevere Olds
300 W. Market Street Akron, OH 44303
Business: (800) 362-9494
Business Fax: (330) 253-6130
Dal Slabaugh