I have an engine lid badge - 1300 badge - made out of aluminum.

Its an old replacement - and it looks dull and white patchy.

I read up about how it has be acid dipped, etch primed and a fair bit of prep work to paint it. It all seems a fair amount of work for a small bit of metal for me.

Is there a good shop that will do that for me instead?

they are usually die cast metal

best of getting it bright anodized at an electroplaters