Scratched Fender Repair

Anyone have any advice or experience on the best way to repair these scratches? Replacing the entire piece is $700+ and was wondering if anyone has buffed out scratches or used a touch up pen? Thanks in advance.

Anyone have any advice or experience on the best way to repair these scratches? Replacing the entire piece is $700+ and was wondering if anyone has buffed out scratches or used a touch up pen? Thanks in advance.