Looks like a good idea, but they will need to tie in well with something else in the car.
Shouldn't cost that much to get sprayed. You could always prep them first, by sanding them with wet-n-dry.
Why don't you spray em yourself???
You will need a tin of Primer and a tin of Black paint. If you are doing Silver instead of Black you will need a tin of clear Lacquer too.
Oh and some wet-n-dry.
Have a go.