Thank you, their website does not have any pricing information for the molds.
Though according to the map on their website the nearest place to me that does the molds is a 5 hour drive away. I guess you could probably get most audiologists to do it for you anyway?
Yes, I went to an unlisted nearby audiologist who had never heard of IEMs (this was many years ago) and he did my impressions for $25, plus he shipped the impressions to the IEM manufacturer for me. Based on that experience I would definitely not try to take my own impressions, but leave it to a professional.
The Etymotics are $150 for the custom ear molds, and the price of the headphones which range from $60 to a few $hundred.