So I was sending out a little prototype pcb to advanced circuits. I need to be able to wire bond to the pcb pads. And the wire bonding guy I talked with said to get gold. Well there's more than one type of gold. Apparently for wire bonding I need a relatively thick layer (30 u inches) (750 nm) of soft gold. (Hard/ Deep Gold and immersion gold (ENIG) don't work, according to my limited reading.) The quote came back from advanced circuits. ~$2k for a few little pcbs! The reason for the high cost is that Advanced circuits sends it out, for processing.
Does anyone know of a board house that will do soft gold on a pcb in prototype quantities?