Not in our case at least. I'd happily spend tens of thousands of dollars to get a new sale. And a phone call is a really great opportunity for us to explain our advantages and establish a personal connection with someone.
What about pumping up the prices somewhat (so you have room to give discounts), listing a base price, and then saying something about calling to outline a specific situation and seeing which discounts apply? Add in a few testimonials about people being glad they called, etc.
That way you give people a ballpark price (while they're doing preliminary research), give people a real motivation to call, and still give yourself wriggle room.
I like companies who list pricing and generally avoid enquiring otherwise, probably because of two reasons; [1] embarrassed if it's going to be way over my budget, [2] may just be doing early research and don't want a sales guy following me up every week afterwards.
If that is true for others also, you could easily add wording/checkbox to opt-out of follow-ups or outline that people just running early budgets are welcome to call too.
I said it could be turned into an advantage ;-)