Another way to go is to look at professional reviews of the gear online. Many times, the MSRP is listed there. I know because I have been frustrated by the same issue as the OP. Yes, those reviews can be dated but you get a sense of what today's pricing might be in any event.
They Almost Never Quote A Price , Why?
Have you ever noted that most expensive audio gear web sites from manufacturer to retail stores withhold prices for most items. I find this annoying, I can afford a certain level of expense but not any. I know you can look for sales of used gear etc. etc. but I really want to see the regular retail price, it gives me something to think about or put money aside for. what are your thoughts abut this.