Well, I just did a search of prices of a headlight on a 2019 Toyota Camry. Just pulled a make, model, and year out of the air that was late model. Price was $1,900 and change! Computer "pack" for that headlight is $534. So the car lot salesman wasn't BSing.
Wife's car is a 2002 Buick Century with 150,000 miles. Engine is fine, overall it's great, still gets 27MPG average. It's been under covered parking and garages most of it's life, paint is just starting to dull. It's just plastic pieces going and a few electronic issues like the odometer doesn't always light up and TRAC idiot light comes on intermittently. So she's beginning to look as she knows it's getting up there.
But the guy told us it's trade-in value is only $800, though we could get $2000 for it on Craigslist. So, I sell a great working car and can buy one headlight? I think not!