Just to get us on the map.
The only place on island (Oahu) here that does PC bicycle frames is Mekala Powdercoat & Patio Mfg in Kapolei.
Last I checked, it was $100 for frame a fork, including a bead blast prep and a single color. I've seen the work and it's decent but they mostly do patio furniture and gates...so YMMV.
Mekala Powdercoat & Patio Mfg - Powdercoating & Patio Furniture Hawaii