Check around your area, in AZ powdercoating fees vary greatly. The guys I go to now are awesome and the $$ is great. They have a $30 minimum for any one color. I remember once I had 12 items, all smaller, leaf spring brackets front and rear, rear shock perch, leaf spring bumper (attached to frame), upper control arms . . . . and was only charged the min $30. I've decided its cheaper for that (all things considered) than for me to strip/blast, prime and paint.
That said others in the area charge in the neighborhood of 70% more