factory optional racing stripes on a 2019 Mustang came in 3 price levels, $500, $1000, and $10,000. Gt 350 decal, Gt 500 decal, and Gt 500 hand painted then clear coated.

the optional painted-on racing stripes cost $10,000.

The GT500's optional stick-on vinyl stripes, which run $1,000.

On the GT350, those same vinyl stripes cost $495.

The markup for the GT500's painted-on versions of the stripes are, according to a Ford company spokesperson, because the stripe job is "hand-prepped, painted, and then clear-coated."

https://www.popularmechanics.com/cars/a29025196/2020-ford-mustang-shelby-gt500-racing-stripes/

Here's a pertinent question, how much will a good paint shop charge for the same job?